Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Stamp, Philip"'
Autor:
Carney, Daniel, Chen, Yanbei, Geraci, Andrew, Müller, Holger, Panda, Cristian D., Stamp, Philip C. E., Taylor, Jacob M.
Progress in the quantum readout and control of mechanical devices from single atoms to large masses may enable a first generation of experiments probing the gravitational interaction in the quantum regime, conceivably within the next decade. In this
Externí odkaz:
http://arxiv.org/abs/2203.11846
Soft factorization has been shown to hold to sub-leading order in QED and to sub-sub-leading order in perturbative quantum gravity, with various loop and non-universal corrections that can be found. Here we show that all terms factorizing at tree lev
Externí odkaz:
http://arxiv.org/abs/2012.13356
Graviton emission decoheres superpositions of matter states. We write the decoherence rate in terms of a "differential Bondi news" function, and show that this function can be written as an overlap integral between different asymptotic radiative stat
Externí odkaz:
http://arxiv.org/abs/1905.05333
We analyze the effect of a bath of spins interacting with a spin system in terms of the equation of motion technique. We show that this formalism can be used with general spin systems and baths, and discuss the concrete case of a Quantum Ising model
Externí odkaz:
http://arxiv.org/abs/1811.07681
Publikováno v:
2018 Class. Quantum Grav. 35 164001
We consider the interaction between a matter system and soft gravitons. We use a functional eikonal expansion to deal with the infrared divergences, and introduce a "composite generating functional" which allows us to calculate a decoherence function
Externí odkaz:
http://arxiv.org/abs/1808.01372
Autor:
Cox, Timothy, Stamp, Philip C. E.
Publikováno v:
Phys. Rev. A 98, 062110 (2018)
The density matrix of a non-relativistic quantum system, divided into $N$ sub-systems, is rewritten in terms of the set of all partitioned density matrices for the system. For the case where the different sub-systems are distinguishable, we derive a
Externí odkaz:
http://arxiv.org/abs/1808.01054
Publikováno v:
Classical and Quantum Gravity, Volume 36, Number 3, 2019
Recent advances in cooling, control, and measurement of mechanical systems in the quantum regime have opened the possibility of the first direct observation of quantum gravity, at scales achievable in experiments. This paper gives a broad overview of
Externí odkaz:
http://arxiv.org/abs/1807.11494
Publikováno v:
Phys. Rev. D 98, 084052 (2018)
We consider the general form of "Correlated Worldline" (CWL) theories of quantum gravity. We show that one can have 2 different kinds of CWL theory, in which the generating functional is written as either a sum or a product over multiple copies of th
Externí odkaz:
http://arxiv.org/abs/1806.08043
Autor:
Cox, Timothy, Stamp, Philip C. E.
We model vortex dynamics in a 2-dimensional Bose superfluid using the Thompson-Stamp (TS) equations of motion, which describes both the classical Hall-Vinen-Iordanskii (HVI) dynamical regime and the fully developed quantum regime, and the crossover b
Externí odkaz:
http://arxiv.org/abs/1706.09919
Publikováno v:
Phys. Rev. B 95, 035117 (2017)
Non-diagonal couplings to a bosonic bath completely change polaronic dynamics, from the usual diagonally-coupled paradigm of smoothly-varying properties. We study, using analytic and numerical methods, a model having both diagonal Holstein and non-di
Externí odkaz:
http://arxiv.org/abs/1609.03096