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pro vyhledávání: '"Frey, Andrew R."'
We study finite temperature effects in string cosmology and their potential gravitational wave signature. Expanding on our recent work arXiv:2310.11494 , we consider a general configuration of highly excited open and closed strings at high enough tem
Externí odkaz:
http://arxiv.org/abs/2408.13803
Autor:
Frey, Andrew R., Mahanta, Ratul, Maharana, Anshuman, Muia, Francesco, Quevedo, Fernando, Villa, Gonzalo
Publikováno v:
J. High Energ. Phys. 2024, 112 (2024)
We revisit the study of string theory close to the Hagedorn temperature with the aim towards cosmological applications. We consider interactions of open and closed strings in a gas of D$p-$branes, and/or one isolated D$p$-brane, in an arbitrary numbe
Externí odkaz:
http://arxiv.org/abs/2310.11494
Autor:
Yang, Jiayue, Frey, Andrew R.
Publikováno v:
JHEP09(2023)029
We investigate the holographic complexity of CFTs compactified on a circle with a Wilson line, dual to magnetized solitons in AdS$_4$ and AdS$_5$. These theories have a confinement-deconfinement phase transition as a function of the Wilson line, and
Externí odkaz:
http://arxiv.org/abs/2307.08229
Publikováno v:
JHEP 12 (2021) 135
We calculate the volume and action forms of holographic complexity for the gravitational collapse of scalar field matter in asymptotically anti-de Sitter spacetime, using numerical methods to reproduce the geometry responding to the oscillating field
Externí odkaz:
http://arxiv.org/abs/2110.09630
Publikováno v:
Phys. Rev. D 105, 066007 (2022)
We point out that if the sector associated with the Standard Model degrees of freedom entered an open string Hagedorn phase in the early universe while the dark radiation sector was not part of this plasma, then this can lead to low values of the obs
Externí odkaz:
http://arxiv.org/abs/2108.03317
Autor:
Frey, Andrew R.
Publikováno v:
Phys. Rev. D 102, 046017 (2020)
Nontrivial Bianchi identities with local magnetic sources are solved by recognizing that gauge potentials are sections rather than globally defined functions, but properly accounting for the source degrees of freedom requires a modification of the fi
Externí odkaz:
http://arxiv.org/abs/1907.12755
Autor:
Cownden, Brad, Frey, Andrew R.
Publikováno v:
Phys. Rev. D 98, 105013 (2018)
Dirac's original solution of the nontrivial Bianchi identity for magnetic monopoles [Dirac 1948], which redefines the fieldstrength along the Dirac string, diagonalizes the gauge and monopole degrees of freedom. We provide a variant of the Dirac stri
Externí odkaz:
http://arxiv.org/abs/1807.07401
Publikováno v:
Phys. Rev. D 102, 026015 (2020)
We diagram the behavior of 5-dimensional anti-de Sitter spacetime against horizon formation in the gravitational collapse of a scalar field, treating the scalar field mass and width of initial data as free parameters, which we call the stability phas
Externí odkaz:
http://arxiv.org/abs/1711.00454
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Warped string compactifications are central to many attempts to stabilize moduli and connect string theory with cosmology and particle phenomenology. We present a first-principles derivation of the low-energy 4D effective theory from dimensional redu
Externí odkaz:
http://arxiv.org/abs/1609.05904