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pro vyhledávání: '"BURGESS, C."'
Recent calculations in both flat and de Sitter spacetimes have highlighted a tension between the decoupling of high-energy physics from low-energy degrees of freedom and the expectation that quantum systems decohere due to interactions with unknown e
Externí odkaz:
http://arxiv.org/abs/2411.09000
Autor:
Smith, Adam, Mylova, Maria, Brax, Philippe, van de Bruck, Carsten, Burgess, C. P., Davis, Anne-Christine
In scalar-tensor theories it is the two-derivative sigma-model interactions that like to compete at low energies with the two-derivative interactions of General Relativity (GR) $\unicode{x2014}$ at least once the dangerous zero-derivative terms of th
Externí odkaz:
http://arxiv.org/abs/2410.11099
Autor:
Smith, Adam, Mylova, Maria, Brax, Philippe, van de Bruck, Carsten, Burgess, C. P., Davis, Anne-Christine
Axio-dilaton models are among the simplest scalar-tensor theories that contain the two-derivative interactions that naturally compete at low energies with the two-derivative inter-actions of General Relativity. Such models are well-motivated as the l
Externí odkaz:
http://arxiv.org/abs/2408.10820
We obtain de Sitter (dS) solutions from controlled string-theory constructions. We review how minimal gauged chiral 6D supergravity evades standard dS no-go theorems by having a positive scalar potential and describe the known 4D classical dS, AdS an
Externí odkaz:
http://arxiv.org/abs/2408.03852
Autor:
Bogojevic, S., Burgess, C. P.
Monopole-fermion (and dyon-fermion) interactions provide a famous example where scattering from a compact object gives a cross section much larger than the object's geometrical size. This underlies the phenomenon of monopole catalysis of baryon-numbe
Externí odkaz:
http://arxiv.org/abs/2407.20146
Publikováno v:
JCAP 08 (2024) 042
We compute the rate with which unobserved fields decohere other fields to which they couple, both in flat space and in de Sitter space, for spectator scalar fields prepared in their standard adiabatic vacuum. The process is very efficient in de Sitte
Externí odkaz:
http://arxiv.org/abs/2403.12240
Publikováno v:
New J. Phys. 26, 053023 (2024)
In this paper we show how the quantum mechanics of the inverted harmonic oscillator can be mapped to the quantum mechanics of a particle in a super-critical inverse square potential. We demonstrate this by relating both of these systems to the Berry-
Externí odkaz:
http://arxiv.org/abs/2402.13909
Scalar-tensor theories with the shift symmetries required by light scalars are well-explored modifications to GR. For these, two-derivative scalar self-interactions usually dominate at low energies and interestingly compete with the two-derivative me
Externí odkaz:
http://arxiv.org/abs/2310.02092