Quantum dynamics of bound states under spacetime fluctuations

10th Biennial Conference on Classical and Quantum Relativistic Dynamics of Particles and Fields

Oniga, Teodora^1 ; Wang, Charles H.-T.^1

Department of Physics, University of Aberdeen, King's College, Aberdeen

AB24 3UE, United Kingdom^1

关键词: Bosonic particles;    Collective effects;    High-precision;    Lindblad master equation;    Markov approximation;    One-dimensional cavities;    Quantum dynamics;    Quantum measurement;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/845/1/012020/pdf
DOI  :  10.1088/1742-6596/845/1/012020

来源: IOP

【 摘 要 】

With recent developments in high-precision quantum measurements, the question of whether observations of decoherence from spacetime fluctuations are accessible experimentally arises. Here we investigate the dynamics of bound states interacting with an environment of gravitons under the Markov approximation. The corresponding Lindblad master equation is presented that enables gravitational decoherence and dissipation due to zero-point spacetime fluctuations to be analyzed. Specifically, we consider a one-dimensional cavity of massless scalar particles that models a light beam with negligible spin polarizations being reflected between two free masses. Numerical simulations have been performed to illustrate the wave-modal dependent decoherence and dissipation of such a configuration. We further demonstrate the existence of nontrivial collective effects akin to superradiance, providing amplifications of gravitational decoherence for a large number of identical bosonic particles.