Zobrazeno 1 - 10
of 51
pro vyhledávání: '"C. P. Burgess"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-31 (2024)
Abstract Motivated by recent discussions and the absence of exact global symmetries in UV completions of gravity we re-examine the axion quality problem (and naturalness issues more generally) using antisymmetric Kalb-Ramond (KR) fields rather than t
Externí odkaz:
https://doaj.org/article/4b4b9bd0f25f4796a869fa1f8a28ab0a
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-17 (2024)
Abstract We describe a simple technique for generating solutions to the classical field equations for an arbitrary nonlinear sigma-model minimally coupled to gravity. The technique promotes an arbitrary solution to the coupled Einstein/Klein-Gordon f
Externí odkaz:
https://doaj.org/article/7a56df486de14a1ba051dfcfe612704b
Autor:
C. P. Burgess, F. Quevedo
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 9, Pp 1-19 (2023)
Abstract Recently there has been an interesting revival of the idea to use large extra dimensions to address the dark energy problem, exploiting the (true) observation that towers of states with masses split, by M N 2 $$ {M}_N^2 $$ = f(N)m 2 , with f
Externí odkaz:
https://doaj.org/article/d70f72ddad1b483bbd845babbc24f064
Autor:
C. P. Burgess, F. Quevedo
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 6, Pp 1-46 (2022)
Abstract We propose a new mechanism that adapts to string theory a perturbative method for stabilizing moduli without leaving the domain of perturbative control, thereby evading the ‘Dine-Seiberg’ problem. The only required nonperturbative inform
Externí odkaz:
https://doaj.org/article/faa309e9686143bba69deb25107d7bc8
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 8, Pp 1-36 (2021)
Abstract Effective theories describing black hole exteriors contain many open-system features due to the large number of gapless degrees of freedom that lie beyond reach across the horizon. A simple solvable Caldeira-Leggett type model of a quantum f
Externí odkaz:
https://doaj.org/article/69963f760ee040f59d13c735dfebb9f0
Autor:
Greg Kaplanek, C. P. Burgess
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 1, Pp 1-31 (2021)
Abstract We examine the late-time evolution of a qubit (or Unruh-De Witt detector) that hovers very near to the event horizon of a Schwarzschild black hole, while interacting with a free quantum scalar field. The calculation is carried out perturbati
Externí odkaz:
https://doaj.org/article/5dcc85c787a946c29cee5aeadd355962
Autor:
Greg Kaplanek, C. P. Burgess
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 3, Pp 1-49 (2020)
Abstract We compute how an accelerating qubit coupled to a scalar field — i.e. an Unruh-DeWitt detector — evolves in flat space, with an emphasis on its late-time behaviour. When calculable, the qubit evolves towards a thermal state for a field p
Externí odkaz:
https://doaj.org/article/e125e464d4654132947c2012a2158537
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 10, Pp 1-28 (2018)
Abstract Persistent puzzles to do with information loss for black holes have stimulated critical reassessment of the domain of validity of semiclassical EFT reasoning in curved spacetimes, particularly in the presence of horizons. We argue here that
Externí odkaz:
https://doaj.org/article/c163121b3594434b8ff5d5a20638a92b
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 9, Pp 1-31 (2018)
Abstract Gravitational wave ‘echoes’ during black-hole merging events have been advocated as possible signals of modifications to gravity in the strong-field (but semiclassical) regime. In these proposals the observable effect comes entirely from
Externí odkaz:
https://doaj.org/article/f6b015ccffd141dc8a89d504317f4ce2
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 8, Pp 1-39 (2018)
Abstract Polarizable atoms interacting with a charged wire do so through an inverse-square potential, V = −g/r 2. This system is known to realize scale invariance in a nontrivial way and to be subject to ambiguities associated with the choice of bo
Externí odkaz:
https://doaj.org/article/cb753a1c17074e418e4fbf3dc941e9f6