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19922026
Showing 2007 · hep-thShow all

10 papers · 2 filters

hep-th2007★ 125 cited

Wald's entropy is equal to a quarter of the horizon area in units of the effective gravitational coupling

Ram Brustein, Dan Gorbonos, Merav Hadad

The Bekenstein-Hawking entropy of black holes in Einstein's theory of gravity is equal to a quarter of the horizon area in units of Newton's constant. Wald has proposed that in gen…

hep-th2007★ 39 cited

Stationary strings and branes in the higher-dimensional Kerr-NUT-(A)dS spacetimes

David Kubiznak, Valeri P. Frolov

We demonstrate complete integrability of the Nambu-Goto equations for a stationary string in the general Kerr-NUT-(A)dS spacetime describing the higher-dimensional rotating black h…

hep-th2007★ 6 cited

CPT theorem in a (5+1) Galilean space-time

M. Kobayashi, M. de Montigny, F. C. Khanna

We extend the 5-dimensional Galilean space-time to a (5+1) Galilean space-time in order to define a parity transformation in a covariant manner. This allows us to discuss the discr…

hep-th2007★ 4 cited

An 8-dimensional realization of the Clifford algebra in the 5-dimensional Galilean space-time

M. Kobayashi, M. de Montigny, F. C. Khanna

We give an 8-dimensional realization of the Clifford algebra in the 5-dimensional Galilean space-time by using a dimensional reduction from the Minkowski space-time to the…

hep-th2007★ 5 cited

The Height of a Giraffe

Don N. Page

A minor modification of the arguments of Press and Lightman leads to an estimate of the height of the tallest running, breathing organism on a habitable planet as the Bohr radius m…

hep-th2007★ 8 cited

No-Bang Quantum State of the Cosmos

Don N. Page

A quantum state of the entire cosmos (universe or multiverse) is proposed which is the equal mixture of the Giddings-Marolf states that are asymptotically single de Sitter spacetim…

hep-th2007★ 67 cited

Constants of Geodesic Motion in Higher-Dimensional Black-Hole Spacetimes

Pavel Krtous, David Kubiznak, Don N. Page +1

In [arXiv:hep-th/0611083] we announced the complete integrability of geodesic motion in the general higher-dimensional rotating black-hole spacetimes. In the present paper we prove…

hep-th2007★ 9 cited

Path-integral quantization of Galilean Fermi fields

M. de Montigny, F. C. Khanna, F. M. Saradzhev

The Galilei-covariant fermionic field theories are quantized by using the path-integral method and five-dimensional Lorentz-like covariant expressions of non-relativistic field equ…

hep-th2007★ 17 cited

A Metric for Gradient RG Flow of the Worldsheet Sigma Model Beyond First Order

T. Oliynyk, V. Suneeta, E. Woolgar

Tseytlin has recently proposed that an action functional exists whose gradient generates to all orders in perturbation theory the Renormalization Group (RG) flow of the target spac…

hep-th2007★ 122 cited

Improved Approximations for Fermion Pair Production in Inhomogeneous Electric Fields

Sang Pyo Kim, Don N. Page

Reformulating the instantons in a complex plane for tunneling or transmitting states, we calculate the pair-production rate of charged fermions in a spatially localized electric fi…