Daemon Decay and Inflation (2009)
Quantum tunneling in Reissner-Nordstrom geometry is studied and the tunneling rate is determined. A possible scenario for cosmic inflation, followed by reheating phases and subsequent...
Equation of State for a van der Waals Universe during Reissner-Nordstrom Expansion (2008)
Prodanov, Emil M., Ivanov, Rossen I., Gueorguiev, V. G.
In a previous work [E.M. Prodanov, R.I. Ivanov, and V.G. Gueorguiev, Reissner-Nordstrom Expansion, Astroparticle Physics 27 (150-154) 2007], we proposed a classical model for the expansion of the...
A remark on Schwarz's topological eld theory (2007)
David H. Adams, Emil M. Prodanov
The standard evaluation of the partition function Z of Schwarz's topological eld theory results in the Ray{Singer analytic torsion. Here we present an alternative evaluation which results in Z =...
Reissner-Nordstrom Expansion (2007)
Prodanov, Emil M., Ivanov, Rossen I., Gueorguiev, V. G.
We propose a classical mechanism for the cosmic expansion during the radiation-dominated era. This mechanism assumes that the Universe is a two-component gas. The first component is a gas of...
Nearly-Hamiltonian Structure for Water Waves with Constant Vorticity (2006)
Constantin, Adrian, Ivanov, Rossen I., Prodanov, Emil M.
We show that the governing equations for two-dimensional gravity water waves with constant non-zero vorticity have a nearly-Hamiltonian structure, which becomes Hamiltonian for steady waves.
Haunted Kaluza Universe with Four-dimensional Lorentzian Flat, Kerr, and Taub-NUT Slices (2005)
Ivanov, Rossen I., Prodanov, Emil M.
The duality between the original Kaluza's theory and Klein's subsequent modification is duality between slicing and threading decomposition of the five-dimensional spacetime. The field equations of...
Pseudo-Newtonian Potential for Charged Particle in Kerr-Newman Geometry (2005)
Ivanov, Rossen I., Prodanov, Emil M.
We consider the equatorial circular motion of a test particle of specific charge q/m
On the Field Equations of Kaluza's Theory (2004)
Ivanov, Rossen I., Prodanov, Emil M.
The field equations of the original Kaluza's theory are analyzed and it is shown that they lead to modification of Einstein's equations. The appearing extra energy-momentum tensor is studied and an...
Riemann Tensor of the Ambient Universe, the Dilaton and the Newton's Constant (2004)
Ivanov, Rossen I., Prodanov, Emil M.
We investigate a four-dimensional world, embedded into a five-dimensional spacetime, and find the five-dimensional Riemann tensor via generalisation of the Gauss (--Codacci) equations. We then derive...
Two classical scalar fields are minimally coupled to gravity in the Kachru-Shulz-Silverstein scenario with a rolling fifth radius. A Tolman wormhole solution is found for a R x S^3 brane with Lorentz...
Standard Cosmology on a Self-Tuning Domain Wall (2000)
Kennedy, Conall, Prodanov, Emil M.
We investigate the cosmology of (4+1)-dimensional gravity coupled to a scalar field and a bulk anisotropic fluid within the context of the single-brane Randall-Sundrum scenario. Assuming a separable...
A remark on Schwarz's topological field theory (2000)
Adams, David H., Prodanov, Emil M.
The standard evaluation of the partition function $Z$ of Schwarz's topological field theory results in the Ray--Singer analytic torsion. Here we present an alternative evaluation which results in...
Standard Cosmology from Sigma-Model (2000)
Kennedy, Conall, Prodanov, Emil M.
We investigate (4+1)- and (5+0)-dimensional gravity coupled to a non-compact scalar field sigma-model and a perfect fluid within the context of the Randall-Sundrum scenario. We find cosmological...
Prodanov, Emil M., Sen, Siddhartha
We show that on three-dimensional Riemannian manifolds without boundaries and with trivial first real de Rham cohomology group (and in no other dimensions) scalar field theory and Maxwell theory are...
Equivalence of the Self-Dual Model and Maxwell-Chern-Simons theory on Arbitrary Manifolds (1999)
Emil M. Prodanov, Siddhartha Sen
Using a group-invariant version of the Faddeev-Popov method we explicitly obtain the partition functions of the Self-Dual Model and Maxwell-Chern-Simons theory. We show that their ratio coincides...
On the Absence of Cross-Confinement for Dynamically Generated Multi-Chern-Simons Theories (1999)
Emil M. Prodanov, Siddhartha Sen, Con Nement
We show that when the induced parity breaking part of the eective action for the low{momentum region of U(1) : : : U(1) Maxwell gauge eld theory with massive fermions in 3 dimensions is coupled to a...
On the Absence of Cross-Confinement for Dynamically Generated Multi-Chern-Simons Theories (1998)
Prodanov, Emil M., Sen, Siddhartha
We show that when the induced parity breaking part of the effective action for the low-momentum region of U(1) x ... x U(1) Maxwell gauge field theory with massive fermions in 3 dimensions is coupled...
Equivalence of the Self-Dual Model and Maxwell-Chern-Simons Theory on Arbitrary Manifolds (1998)
Prodanov, Emil M., Sen, Siddhartha
Using a group-invariant version of the Faddeev-Popov method we explicitly obtain the partition functions of the Self-Dual Model and Maxwell-Chern-Simons theory. We show that their ratio coincides...