Zobrazeno 1 - 10
of 181
pro vyhledávání: '"Lidsey, James. E."'
Autor:
Lidsey, James E.
The cosmological field equations sourced by a self-interacting scalar field are dynamically equivalent to a closed system of equations obtained by applying the moment method to non-linear Schr\"odinger equations possessing an underlying non-relativis
Externí odkaz:
http://arxiv.org/abs/1802.09186
Autor:
Lidsey, James E.
The nonlinear, cubic Schrodinger (NLS) equation has numerous physical applications, but in general is very difficult to solve. Nonetheless, under certain circumstances parameters quantifying the width, momentum and energy of the wavefunction evolve u
Externí odkaz:
http://arxiv.org/abs/1309.7181
Autor:
Lidsey, James E.
The Korteweg-de Vries (KdV) equation is a non-linear wave equation that has played a fundamental role in diverse branches of mathematical and theoretical physics. In the present paper, we consider its significance to cosmology. It is found that the K
Externí odkaz:
http://arxiv.org/abs/1205.5641
Holographic Cosmology from the First Law of Thermodynamics and the Generalized Uncertainty Principle
Autor:
Lidsey, James E.
Publikováno v:
Phys. Rev. D 88, 103519 (2013)
The cosmological Friedmann equation sourced by the trace anomaly of a conformal field theory that is dual to the five-dimensional Schwarzschild-AdS geometry can be derived from the first law of thermodynamics if the apparent horizon of the boundary s
Externí odkaz:
http://arxiv.org/abs/0911.3286
Publikováno v:
JHEP 1001:025,2010
We reconsider a string theoretic inflationary model, where inflation is driven by $n$ multiple coincident $D3$-branes in the finite $n$ limit. We show that the finite $n$ action can be continued to the limit of large $n$, where it converges to the ac
Externí odkaz:
http://arxiv.org/abs/0908.4252
Publikováno v:
Gen.Rel.Grav.41:2725-2736,2009
The conditions for the existence and stability of cosmological power-law scaling solutions are established when the Einstein-Hilbert action is modified by the inclusion of a function of the Gauss-Bonnet curvature invariant. The general form of the ac
Externí odkaz:
http://arxiv.org/abs/0903.0270
Autor:
Lidsey, James E.
Publikováno v:
Class.Quant.Grav.26:147001,2009
The Friedmann equations of general relativity can be derived from the first law of thermodynamics when the entropy of the apparent horizon of a spatially isotropic universe is given by the Bekenstein-Hawking entropy. We point out that if the entropy
Externí odkaz:
http://arxiv.org/abs/0812.2791
Autor:
Alabidi, Laila, Lidsey, James E.
Publikováno v:
Phys.Rev.D78:103519,2008
Single-field models of inflation are analysed in light of the WMAP five-year data. Assuming instantaneous reheating, we find that modular/new inflation models with small powers in the effective inflaton self-interaction are more strongly constrained
Externí odkaz:
http://arxiv.org/abs/0807.2181