Zobrazeno 1 - 10
of 1 455
pro vyhledávání: '"Hoover, D"'
Publikováno v:
JHEP 0906:014,2009
We compute how threshold effects obtained by integrating out a heavy particle localized on a codimension-2 brane influence the properties of the brane and the bulk fields it sources in D=d+2 dimensions. We do so using a recently developed formalism f
Externí odkaz:
http://arxiv.org/abs/0903.0402
Publikováno v:
JHEP 0903:124,2009
It is generic for the bulk fields sourced by branes having codimension two and higher to diverge at the brane position, much as does the Coulomb potential at the position of its source charge. This complicates finding the relation between brane prope
Externí odkaz:
http://arxiv.org/abs/0812.3820
Publikováno v:
JHEP 0807:075,2008
We describe a broad class of time-dependent exact wave solutions to 6D gauged chiral supergravity with two compact dimensions. These 6D solutions are nontrivial warped generalizations of 4D pp-waves and Kundt class solutions and describe how a broad
Externí odkaz:
http://arxiv.org/abs/0710.3769
Publikováno v:
JHEP 0709:124,2007
We describe an explicit UV regularization of the brane singularities for all 4D flat configurations of 6D gauged chiral supergravity compactified on axially symmetric internal spaces (for which the general solutions are known). All such solutions hav
Externí odkaz:
http://arxiv.org/abs/0705.3212
Publikováno v:
JCAP 0702:009,2007
We analyze the axially-symmetric scalar perturbations of 6D chiral gauged supergravity compactified on the general warped geometries in the presence of two source branes. We find all of the conical geometries are marginally stable for normalizable pe
Externí odkaz:
http://arxiv.org/abs/hep-th/0610078
Publikováno v:
NewJ.Phys.8:324,2006
We construct explicitly time-dependent exact solutions to the field equations of 6D gauged chiral supergravity, compactified to 4D in the presence of up to two 3-branes situated within the extra dimensions. The solutions we find are scaling solutions
Externí odkaz:
http://arxiv.org/abs/hep-th/0608083
Publikováno v:
Phys.Rev.D77:063534,2008
We study the process whereby quantum cosmological perturbations become classical within inflationary cosmology. By setting up a master-equation formulation we show how quantum coherence for super-Hubble modes can be destroyed by their coupling to the
Externí odkaz:
http://arxiv.org/abs/astro-ph/0601646
Publikováno v:
JHEP0603:091,2006
We study a general configuration of parallel branes having co-dimension >2 situated inside a compact d-dimensional bulk space within the framework of a scalar and flux field coupled to gravity in D dimensions, such as arises in the bosonic part of so
Externí odkaz:
http://arxiv.org/abs/hep-th/0512218
Autor:
Hoover, D., Burgess, C. P.
Publikováno v:
JHEP0601:058,2006
We calculate the first three Gilkey-DeWitt (heat-kernel) coefficients, a0, a1 and a2, for massive particles having the spins of most physical interest in n dimensions, including the contributions of the ghosts and the fields associated with the appro
Externí odkaz:
http://arxiv.org/abs/hep-th/0507293
Publikováno v:
JHEP 0509 (2005) 050
We compute (as functions of the shape and Wilson-line moduli) the one-loop Casimir energy induced by higher-dimensional supergravities compactified from 6D to 4D on 2-tori, and on some of their Z_N orbifolds. Detailed calculations are given for a 6D
Externí odkaz:
http://arxiv.org/abs/hep-th/0506164