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      Quantum coherence, radiance, and resistance of gravitational systems

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          Abstract

          We develop a general framework for the open dynamics of an ensemble of quantum particles subject to spacetime fluctuations about the flat background. An arbitrary number of interacting bosonic and fermionic particles are considered. A systematic approach to the generation of gravitational waves in the quantum domain is presented that recovers known classical limits in terms of the quadrupole radiation formula and back-reaction dissipation. Classical gravitational emission and absorption relations are quantized into their quantum field theoretical counterparts in terms of the corresponding operators and quantum ensemble averages. Certain arising consistency issues related to factor ordering have been addressed and resolved. Using the theoretical formulation established here with numerical simulations in the quantum regime, we demonstrate new predictions including decoherence through the spontaneous emission of gravitons and collectively amplified "superradiance" of gravitational waves by a highly coherent state of identical particles.

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          Most cited references 22

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          Correlation between Photons in two Coherent Beams of Light

           R. BROWN,  R. TWISS (1956)
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            Quantum Brownian motion in a general environment: Exact master equation with nonlocal dissipation and colored noise

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              Quantum Spacetime Phenomenology

              I review the current status of phenomenological programs inspired by quantum-spacetime research. I stress in particular the significance of results establishing that certain data analyses provide sensitivity to effects introduced genuinely at the Planck scale. And my main focus is on phenomenological programs that managed to affect the directions taken by studies of quantum-spacetime theories.
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                Author and article information

                Journal
                2017-01-15
                Article
                1701.04122

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

                Custom metadata
                10 pages, 3 figures
                gr-qc astro-ph.CO quant-ph

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