Reconstruction of the bubble nucleating potential (2009)
Luca Amendola, Carlo Baccigalupi, Rostislav Konoplich, Franco Occhionero, Sergei Rubin
We calculate analytically the bubble nucleation rate in a model of rst order in ation which is able to produce large scale structure. The computation includes the rst-order departure from the...
The High Redshift Integrated Sachs-Wolfe Effect (2009)
Xia, Jun-Qing, Viel, Matteo, Baccigalupi, Carlo, Matarrese, Sabino
In this paper we rely on the quasar (QSO) catalog of the Sloan Digital Sky Survey Data Release Six (SDSS DR6) of about one million photometrically selected QSOs to compute the Integrated Sachs-Wolfe...
Observing the Evolution of the Universe (2009)
Aguirre, James, Amblard, Alexandre, Ashoorioon, Amjad, Baccigalupi, Carlo, Balbi, Amedeo, Bartlett, James, ...
How did the universe evolve? The fine angular scale (l>1000) temperature and polarization anisotropies in the CMB are a Rosetta stone for understanding the evolution of the universe. Through detailed...
Lensed CMB temperature and polarization maps from the Millennium Simulation (2009)
Carbone, Carmelita, Baccigalupi, Carlo, Bartelmann, Matthias, Matarrese, Sabino, Springel, Volker
Stompor, Radek, Leach, Samuel, Stivoli, Federico, Baccigalupi, Carlo
We discuss an approach to the component separation of microwave, multi-frequency sky maps as those typically produced from Cosmic Microwave Background (CMB) Anisotropy data sets. The algorithm is...
Making maps from Planck LFI 30 GHz data with asymmetric beams and cooler noise (2009)
Ashdown, Mark A.J., Baccigalupi, Carlo, Bartlett, James G.
The PLANCK satellite will observe the full sky at nine frequencies from 30 to 857 GHz. The goal of this paper is to examine the effects of four realistic instrument systematics in the 30 GHz...
Lensed CMB temperature and polarization maps from the Millennium Simulation (2008)
Carbone, Carmelita, Baccigalupi, Carlo, Bartelmann, Matthias, Matarrese, Sabino, Springel, Volker
We have constructed the first all-sky CMB temperature and polarization lensed maps based on a high-resolution cosmological N-body simulation, the Millennium Simulation (MS). We have exploited the...
Full-sky maps for gravitational lensing of the cosmic microwave background (2008)
Carbone, Carmelita, Springel, Volker, Baccigalupi, Carlo, Bartelmann, Matthias, Matarrese, Sabino
We use the large cosmological Millennium Simulation (MS) to construct the first all-sky maps of the lensing potential and the deflection angle, aiming at gravitational lensing of the CMB, with the...
Coupled and extended quintessence: Theoretical differences and structure formation (2008)
Pettorino, Valeria, Baccigalupi, Carlo
The case of a coupling between dark energy and matter (Coupled Quintessence) or gravity (Extended Quintessence) has recently attracted a deep interest and has been widely investigated both in the...
Coupled and Extended Quintessence: theoretical differences and structure formation (2008)
Pettorino, Valeria, Baccigalupi, Carlo
The case of a coupling between dark energy and matter (Coupled Quintessence) or gravity (Extended Quintessence) has recently attracted a deep interest and has been widely investigated both in the...
Bonaldi, Anna, Ricciardi, Sara, Leach, Samuel, Stivoli, Federico, Baccigalupi, Carlo, De Zotti, Gianfranco
The Correlated Component Analysis (CCA) allows us to estimate how the different diffuse emissions mix in CMB experiments, exploiting also complementary information from other surveys. It is...
Full-sky maps for gravitational lensing of the cosmic microwave background (2008)
Carbone, Carmelita, Springel, Volker, Baccigalupi, Carlo, Bartelmann, Matthias, Matarrese, Sabino
Component separation methods for the PLANCK mission (2008)
Leach, Samuel M., Baccigalupi, Carlo, Barreiro, R.B., De Zotti, Gianfranco, Gonzalez-Nuevo, Joaquin, ...
The Planck satellite will map the full sky at nine frequencies from 30 to 857 GHz. The CMB intensity and polarization that are its prime targets are contaminated by foreground emission. The goal of...
The Stochastic Gravitational Background From Inflationary Phase Transitions (2007)
Carlo Baccigalupi, Luca Amendola, Pierluigi Fortini, Franco Occhionero
We consider true vacuum bubbles generated in a first order phase transition occurring during the slow rolling era of a two field inflation: it is known that gravitational waves are produced by the...
Cosmic Microwave Background Component Separation by Parameter Estimation (2007)
Eriksen, Hans Kristian, Dickinson, C., Lawrence, C.R., Baccigalupi, Carlo
We propose a solution to the CMB component separation problem based on standard parameter estimation techniques. We assume a parametric spectral model for each signal component, and fit the...
Stivoli, Federico, Baccigalupi, Carlo, Maino, Davide, Stompor, Radek
The detection and characterization of the B mode of cosmic microwave background (CMB) polarization anisotropies will not be possible without a high-precision removal of the foreground contamination...
Bonaldi, Anna, Bedini, L., Salerno, E., Baccigalupi, Carlo, De Zotti, Gianfranco
We present the first tests of a new method, the Correlated Component Analysis (CCA) based on second-order statistics, to estimate the mixing matrix, a key ingredient to separate astrophysical...
Maio, Umberto, Dolag, Klaus, Meneghetti, Massimo, Moscardini, Lauro, Yoshida, Naoki, Baccigalupi, Carlo, ...
We present the first hydrodynamic N-body simulations of primordial gas clouds responsible for the reionisation process in dark energy cosmologies. We compare the cosmological constant scenario with a...
Full-sky maps for gravitational lensing of the CMB (2007)
Carbone, Carmelita, Springel, Volker, Baccigalupi, Carlo, Bartelmann, Matthias, Matarrese, Sabino
We use the large cosmological Millennium Simulation (MS) to construct the first all-sky maps of the lensing potential and the deflection angle, aiming at gravitational lensing of the CMB, with the...
Making maps from Planck LFI 30 GHz data (2007)
Ashdown, Mark A.J., Baccigalupi, Carlo, Balbi, Amedeo, Bartlett, James G.
This paper is one of a series describing the performance and accuracy of map-making codes as assessed by the Planck CTP working group. We compare the performance of multiple codes written by...
Stochastic gravitational wave background from cold dark matter halos (2007)
Carbone, Carmelita, Baccigalupi, Carlo, Matarrese, Sabino
The current knowledge of cosmological structure formation suggests that Cold Dark Matter (CDM) halos possess a nonspherical density profile, implying that cosmic structures can be potential sources...
Bayesian foreground analysis with CMB data (2007)
Eriksen, Hans Kristian, Dickinson, C., Lawrence, C.R., Baccigalupi, Carlo, Banday, A.J., Gorski, K.M., ...
The quality of CMB observations has improved dramatically in the last few years, and will continue to do so in the coming decade. Over a wide range of angular scales, the uncertainty due to...
Negrello, Mattia, Perrotta, Francesca, Silva, Laura, De Zotti, Gianfranco, Granato, Gian Luigi, ...
We present a quantitative analysis of the astrophysical and cosmological information that can be extracted from the many important wide-area, shallow surveys that will be carried out in the next few...
Making sky maps from Planck data (2007)
Ashdown, Mark A.J., Baccigalupi, Carlo, Balbi, Amedeo, Bartlett, James G.
This paper is one of a series describing the performance and accuracy of map-making codes as assessed by the Planck CTP working group. We compare the performance of multiple codes written by...
Maino, Davide, Donzelli, Simona, Banday, A.J., Stivoli, Federico, Baccigalupi, Carlo
We present an application of the fast Independent Component Analysis (FastICA) to the WMAP 3yr data with the goal of extracting the CMB signal. We evaluate the confidence of our results by means of...
Dark-energy constraints with ALMA polarization measurements (2007)
Andreani, Paola, Baccigalupi, Carlo
The Cosmic Microwave Background (CMB) physics can be used to constrain the dark energy dynamics: B modes of the polarization of the diffuse CMB emission as well as the polarized signal towards...
Federico Stivoli, Carlo Baccigalupi, Davide Maino, Radek Stompor
The detection and characterization of the B mode of Cosmic Microwave Background (CMB) polarization anisotropies will not be possible without a high precision removal of the foreground contamination...
The CMB as a dark energy probe (2006)
Baccigalupi, Carlo, Acquaviva, Viviana
We give a brief review of the known effects of a dynamical vacuum cosmological component, the dark energy, on the anisotropies of the cosmic microwave background (CMB). We distinguish between a...
Stochastic gravitational wave background from cold dark matter halos (2005)
Carbone, Carmelita, Baccigalupi, Carlo, Matarrese, Sabino
The current knowledge of cosmological structure formation suggests that Cold Dark Matter (CDM) halos possess a nonspherical density profile, implying that cosmic structures can be potential sources...
Scaling solutions in scalar-tensor cosmologies (2005)
Pettorino, Valeria, Baccigalupi, Carlo, Perrotta, Francesca
The possibility of a connection between dark energy and gravity through a direct coupling in the Lagrangian of the underlying theory has acquired an increasing interest due to the recently discovered...
Dark energy records in lensed cosmic microwave background (2005)
Acquaviva, Viviana, Baccigalupi, Carlo
We consider the weak lensing effect induced by linear cosmological perturbations on the cosmic microwave background (CMB) polarization anisotropies. We find that the amplitude of the lensing peak in...
Stivoli, Federico, Baccigalupi, Carlo, Maino, Davide, Stompor, Radek
In this work we study the relevance of the component separation technique based on the Independent Component Analysis (ICA) and investigate its performance in the context of a limited sky coverage...
Evolution of dark-matter haloes in a variety of dark-energy cosmologies (2005)
Bartelmann, Matthias, Dolag, Klaus, Perrotta, Francesca, Baccigalupi, Carlo, Moscardini, Lauro, Meneghetti, Massimo, ...
Strong lensing by cluster-sized halos in dark energy cosmologies (2005)
Meneghetti, Massimo, Bartelmann, Matthias, Dolag, Klaus, Perrotta, Francesca, Baccigalupi, Carlo, Moscardini, Lauro, ...
Constraints on dark energy from strong gravitational lensing by galaxy clusters (2005)
Meneghetti, Massimo, Baccigalupi, Carlo, Bartelmann, Matthias, Dolag, Klaus, Moscardini, Lauro, Perrotta, Francesca, ...
Strong lensing by cluster-sized halos in dark energy cosmologies (2005)
Meneghetti, Massimo, Bartelmann, Matthias, Dolag, Klaus, Perrotta, Francesca, Baccigalupi, Carlo, Moscardini, Lauro, ...
Extended quintessence with an exponential coupling (2004)
Pettorino, Valeria, Baccigalupi, Carlo, Mangano, Gianpiero
We study a class of extended quintessence cosmologies where the scalar field playing the role of the dark energy is exponentially coupled to the Ricci scalar. We find that the dynamics induced by the...
Structure formation constraints on the Jordan-Brans-Dicke theory (2004)
Acquaviva, Viviana, Baccigalupi, Carlo, Leach, Samuel M., Liddle, Andrew R., Perrotta, Francesca
We use cosmic microwave background data from WMAP, ACBAR, VSA and CBI, and galaxy power spectrum data from 2dF, to constrain flat cosmologies based on the Jordan-Brans-Dicke theory, using a Markov...
Giovi, Fabio, Baccigalupi, Carlo, Perrotta, Francesca
We consider the distribution of the non-Gaussian signal induced by weak lensing on the primary total intensity cosmic microwave background (CMB) anisotropies. Our study focuses on the three point...
Weak lensing and gravity theories (2004)
Acquaviva, Viviana, Baccigalupi, Carlo, Perrotta, Francesca
We present the theory of weak gravitational lensing in cosmologies with generalized gravity, described in the Lagrangian by a generic function depending on the Ricci scalar and a non-minimally...
Weak lensing in generalized gravity theories (2004)
Acquaviva, Viviana, Baccigalupi, Carlo, Perrotta, Francesca
We extend the theory of weak gravitational lensing to cosmologies with generalized gravity, described in the Lagrangian by a generic function depending on the Ricci scalar and a non-minimal coupled...
Strong lensing by cluster-sized haloes in dark-energy cosmologies (2004)
Meneghetti, Massimo, Bartelmann, Matthias, Dolag, Klaus, Moscardini, Lauro, Perrotta, Francesca, Baccigalupi, Carlo, ...
We study the efficiency of numerically simulated galaxy clusters for producing strong gravitational lensing events in different dark-energy cosmologies with constant and time-variable equation of...
Weak lensing in generalized gravity theories (2004)
Acquaviva, Viviana, Baccigalupi, Carlo, Perrotta, Francesca
We extend the theory of weak gravitational lensing to cosmologies with generalized gravity, described in the Lagrangian by a generic function depending on the Ricci scalar and a non-minimal coupled...
Approaching Lambda without fine-tuning (2004)
Matarrese, Sabino, Baccigalupi, Carlo, Perrotta, Francesca
We address the fine-tuning problem of dark energy cosmologies which arises when the dark energy density needs to initially lie in a narrow range in order for its present value to be consistent with...
Numerical study of halo concentrations in dark-energy cosmologies (2004)
Dolag, Klaus, Bartelmann, Matthias, Perrotta, Francesca, Baccigalupi, Carlo, Moscardini, Lauro, Meneghetti, Massimo, ...
We study the concentration parameters, their mass dependence and redshift evolution, of dark-matter halos in different dark-energy cosmologies with constant and time-variable equation of state, and...
Numerical study of halo concentrations in dark-energy cosmologies (2003)
Dolag, Klaus, Bartelmann, Matthias, Perrotta, Francesca, Baccigalupi, Carlo, Moscardini, Lauro, Meneghetti, Massimo, ...
We study the concentration parameters, their mass dependence and redshift evolution, of dark-matter halos in different dark-energy cosmologies with constant and time-variable equation of state, and...
Weak lensing, structure formation and dark energy (2003)
Giovi, Fabio, Baccigalupi, Carlo, Perrotta, Francesca
We study how CMB bispectrum, produced by weak gravitational lensing and structure formation, can constrain the redshift evolution of the dark energy equation of state independently on its present...
Cosmic Microwave Background Polarisation: foreground contrast and component separation (2003)
We evaluate the expected level of foreground contamination to the cosmic microwave background (CMB) polarised radiation, focusing on the diffuse emission from our own Galaxy. In particular, we...
Weighting CMB and Galactic synchrotron polarisation (2003)
We review the present knowledge of the diffuse Galactic synchrotron emission in polarisation. At microwave frequencies, we assess the expected contamination to the CMB polarisation angular power...
Constraining the dark energy dynamics with the cosmic microwave background bispectrum (2003)
Giovi, Fabio, Baccigalupi, Carlo, Perrotta, Francesca
We consider the influence of the dark energy dynamics at the onset of cosmic acceleration on the Cosmic Microwave Background (CMB) bispectrum, through the weak lensing effect induced by structure...
Digital deblurring of CMB maps: Performance and efficient implementation (2003)
Vio, Roberto, Nagy, J.G., Tenorio, L., Andreani, Paola, Baccigalupi, Carlo, Wamsteker, W.
Digital deblurring of images is an important problem that arises in multifrequency observations of the Cosmic Microwave Background (CMB) where, because of the width of the point spread functions...
Digital deblurring of CMB maps. II. Asymmetric point spread function (2003)
Vio, Roberto, Nagy, J.G., Tenorio, L., Andreani, Paola, Baccigalupi, Carlo, Wamsteker, W.
In this second paper in a series dedicated to developing efficient numerical techniques for the deblurring Cosmic Microwave Background (CMB) maps, we consider the case of asymmetric point spread...
Arc statistics in cosmological models with dark energy (2003)
Bartelmann, Matthias, Meneghetti, Massimo, Perrotta, Francesca, Baccigalupi, Carlo, Moscardini, Lauro
We investigate how the probability of the formation of giant arcs in galaxy clusters is expected to change in cosmological models dominated by dark energy with an equation of state p=w rho c^2...
Arc Statistics in Cosmological Models with Dark Energy (2002)
Bartelmann, Matthias, Meneghetti, Massimo, Perrotta, Francesca, Baccigalupi, Carlo, Moscardini, Lauro
We investigate how the probability of the formation of giant arcs in galaxy clusters is expected to change in cosmological models dominated by dark energy with an equation of state p=w rho c^2...
Halo Concentrations and Weak-Lensing Number Counts in Dark Energy Cosmologies (2002)
Bartelmann, Matthias, Perrotta, Francesca, Baccigalupi, Carlo
We study the effects of a dark energy component with equation of state p=w rho with constant w >= -1 on the formation of Cold Dark Matter (CDM) haloes. We find two main effects: first, haloes form...
Millimeter-band Surveys of Extragalactic Sources (2002)
De Zotti, Gianfranco, Perrotta, Francesca, Granato, Gian Luigi, Silva, Laura, Ricci, Roberto, Baccigalupi, Carlo, ...
Surveys at mm wavelengths emphasize rare classes of extragalactic radio sources characterized by spectra keeping flat or inverted up to high frequencies (such as blazars, GPS sources, advection...
On the dark energy clustering properties (2002)
Perrotta, Francesca, Baccigalupi, Carlo
We highlight a viable mechanism leading to the formation of dark energy structures on sub-horizon cosmological scales, starting from linear perturbations in scalar-tensor cosmologies. We show that...
What's behind acoustic peaks in the cosmic microwave background anisotropies (2002)
Baccigalupi, Carlo, Balbi, Amedeo, Matarrese, Sabino, Perrotta, Francesca, Vittorio, Nicola
We give a brief review of the physics of acoustic oscillations in Cosmic Microwave Background (CMB) anisotropies. As an example of the impact of their detection in cosmology, we show how the present...
Halo concentrations and weak-lensing number counts in dark energy cosmologies (2002)
Bartelmann, Matthias, Perrotta, Francesca, Baccigalupi, Carlo
We study the effects of a dark energy component with equation of state p=w rho with constant w >= -1 on the formation of Cold Dark Matter (CDM) haloes. We find two main effects: first, haloes form...
Mesa, D., Baccigalupi, Carlo, De Zotti, Gianfranco, Gregorini, L., Vigotti, M., ...
We investigate the statistical properties of the polarized emission of extragalactic radio sources and estimate their contribution to the power spectrum of polarization fluctuations in the microwave...
All-sky astrophysical component separation with Fast Independent Component Analysis (FastICA) (2002)
Maino, Davide, Farusi, A., Baccigalupi, Carlo, Perrotta, Francesca, Banday, A.J., Bedini, L., ...
We present a new, fast, algorithm for the separation of astrophysical components superposed in maps of the sky, based on the fast Independent Component Analysis technique (FastICA). It allows to...
Gravitational lensing of extended high-redshift sources by dark matter haloes (2002)
Perrotta, Francesca, Baccigalupi, Carlo, Bartelmann, Matthias, De Zotti, Gianfranco, Granato, Gian Luigi
On the dark energy clustering properties (2002)
Perrotta, Francesca, Baccigalupi, Carlo
We highlight a viable mechanism leading to the formation of dark energy structures on sub-horizon cosmological scales, starting from linear perturbations in scalar-tensor cosmologies. We show that...
Baccigalupi, Carlo, Balbi, Amedeo, Matarrese, Sabino, Perrotta, Francesca, Vittorio, Nicola
We constrain cosmological parameters in flat cosmologies with tracking dark energy (or Quintessence) using the existing data on Cosmic Microwave Background (CMB) anisotropies. We perform a maximum...
Formation of spheroidal galaxies: the sub-mm view (2002)
De Zotti, Gianfranco, Granato, Gian Luigi, Baccigalupi, Carlo, Magliocchetti, Manuela, Mazzei, Paola, Perrotta, Francesca, ...
The intensity of the Cosmic Far-IR Background and the strong evolution of galaxies in the far-IR to mm wavelength range demonstrate that the bulk of starlight emitted during the early phases of...
Workshop summary and the future (2001)
De Zotti, Gianfranco, Burigana, Carlo, Baccigalupi, Carlo
We present a tentative summary of the many very interesting issues that have been addresses at this workshop, focussing in particular on the perspectives for measuring the polarization power spectra...
Polarized Foregrounds Power Spectra vs CMB (2001)
Baccigalupi, Carlo, De Zotti, Gianfranco, Burigana, Carlo, Perrotta, Francesca
We briefly review our work about the polarized foreground contamination of the Cosmic Microwave Background maps. We start by summarizing the main properties of the polarized cosmological signal,...
Baccigalupi, Carlo, Balbi, Amedeo, Matarrese, Sabino, Perrotta, Francesca, Vittorio, Nicola
We constrain cosmological parameters in flat cosmologies with tracking dark energy (or Quintessence) using the existing data on Cosmic Microwave Background (CMB) anisotropies. We perform a maximum...
Gravitational lensing: effects of cosmology and of lens and source profiles (2001)
Perrotta, Francesca, Baccigalupi, Carlo, Bartelmann, Matthias, De Zotti, Gianfranco, Granato, Gian Luigi
We present detailed calculations of the magnification distribution, including both weak and strong lensing, using very recent solutions of the Dyer-Roeder (1973) equation for light propagation in a...
Power spectrum of the polarized diffuse Galactic radio emission (2001)
Baccigalupi, Carlo, Burigana, Carlo, Perrotta, Francesca, De Zotti, Gianfranco, La Porta, L., Maino, Davide, ...
We have analyzed the available polarization surveys of the Galactic emission to estimate to what extent it may be a serious hindrance to forthcoming experiments aimed at detecting the polarized...
Tracking Extended Quintessence (2000)
Baccigalupi, Carlo, Matarrese, Sabino, Perrotta, Francesca
We study the cosmological role of a Tracking Field $\phi$ in Extended Quintessence scenarios (TEQ), where the dynamical vacuum energy driving the acceleration of the universe today is coupled with...
Extended Quintessence: imprints on the cosmic microwave background spectra (2000)
Baccigalupi, Carlo, Perrotta, Francesca, Matarrese, Sabino
We describe the observable features of the recently proposed Extended Quintessence scenarios on the Cosmic Microwave Background (CMB) anisotropy spectra. In this class of models a scalar field...
Tracking extended quintessence (2000)
Baccigalupi, Carlo, Matarrese, Sabino, Perrotta, Francesca
We study the cosmological role of a Tracking Field $\phi$ in Extended Quintessence scenarios (TEQ), where the dynamical vacuum energy driving the acceleration of the universe today is coupled with...
Baccigalupi, Carlo, Perrotta, Francesca
We predict the imprint of linear bubbly perturbations on the polarization and temperature anisotropies of the cosmic microwave background (CMB). We analytically model a bubbly density perturbation at...
Perrotta, Francesca, Baccigalupi, Carlo, Matarrese, Sabino
We study Quintessence cosmologies in the context of scalar-tensor theories of gravity, where a scalar field $\phi$, assumed to provide most of the cosmic energy density today, is non-minimally...
Throwing pebbles in the primordial pond (1999)
We consider anisotropies in the Cosmic Microwave Background (CMB) generated by spatially limited seeds; these objects could correspond to relics of high energy symmetry breaking in the early...
Perrotta, Francesca, Baccigalupi, Carlo, Matarrese, Sabino
We study Quintessence cosmologies in the context of scalar-tensor theories of gravity, where a scalar field $\phi$, assumed to provide most of the cosmic energy density today, is non-minimally...
consider the case of anisotropies in the Cosmic Microwave Background (CMB) from one single ordered perturbation source, or seed, existing well before decoupling between matter and radiation. Such...
Early time perturbations behavior in scalar field cosmologies (1999)
Perrotta, Francesca, Baccigalupi, Carlo
We consider the problem of the initial conditions and behaviour of the perturbations in scalar field cosmology with general potential. We use the general definition of adiabatic and isocurvature...
Perturbations in Quintessential Inflation (1998)
Baccigalupi, Carlo, Perrotta, Francesca
Recently Peebles and Vilenkin proposed and quantitatively analyzed the fascinating idea that a substantial fraction of the present cosmic energy density could reside in the vacuum potential energy of...
I consider the case of anisotropies in the Cosmic Microwave Background (CMB) from one single ordered perturbation source, or seed, existing well before decoupling between matter and radiation. Such...
Early time perturbations behaviour in scalar field cosmologies (1998)
Perrotta, Francesca, Baccigalupi, Carlo
We consider the problem of the initial conditions and behaviour of the perturbations in scalar field cosmology with general potential. We use the general definition of adiabatic and isocurvature...
Non-Gaussian Dark Matter perturbations and their imprint on the microwave background (1998)
The phases of the Fourier transform of any linear cosmological perturbation may be random (the Gaussian case) or not (the non-Gaussian case). If a non-Gaussian inhomogeneity was generated during the...
Sub-degree CMB anisotropies from inflationary bubbles (1997)
It is well known that processes of first order phase transitions may have occurred in the inflationary era. If one or more occurred well before the end of inflation, the nucleated bubbles are...
Stochastic gravitational background from inflationary phase transitions (1997)
Baccigalupi, Carlo, Amendola, Luca, Fortini, Pierluigi, Occhionero, Franco
We consider true vacuum bubbles generated in a first order phase transition occurring during the slow rolling era of a two field inflation: it is known that gravitational waves are produced by the...
Reconstruction of the bubble nucleating potential (1996)
Amendola, Luca, Baccigalupi, Carlo, Konoplich, Rostislav, Occhionero, Franco, Rubin, Sergei
We calculate analytically the bubble nucleation rate in a model of first order inflation which is able to produce large scale structure. The computation includes the first-order departure from the...
Reconciling inflation with openness (1996)
Amendola, Luca, Baccigalupi, Carlo, Occhionero, Franco
It is already understood that the increasing observational evidence for an open Universe can be reconciled with inflation if our horizon is contained inside one single huge bubble nucleated during...
Reconciling Inflation with Openness (1995)
Amendola, Luca, Baccigalupi, Carlo, Occhionero, Franco
It is already understood that the increasing observational evidence for an open Universe may be reconciled with inflation if our horizon is contained inside one single huge bubble nucleated during...