"Non UBC"@en . "DSpace"@en . "Joye, Alain"@en . "2016-07-27T05:02:33Z"@* . "2016-01-26T15:45"@en . "We investigate the infinite volume limit of quantized photon fields in multimode coherent states. We show that for states containing a continuum of coherent modes, it is natural to consider their phases to be random and identically distributed. The infinite volume states give rise to Hilbert space representations of the canonical commutation relations which are random as well and can be expressed with the help of Ito stochastic integrals. We analyze the dynamics of the infinite state alone and the open system dynamics of small systems coupled to it. We show that under the free field dynamics, initial phase distributions are driven to the uniform distribution, and we demonstrate that coherencesin small quantum systems, interacting with the infinite coherent state,\nexhibit Gaussian time decay, in contrast with the decay caused byinfinite thermal states, which is known to be exponentially rapid only.\n\nWork in collaboration with M. Merkli"@en . "https://circle.library.ubc.ca/rest/handle/2429/58559?expand=metadata"@en . "29 minutes"@en . "video/mp4"@en . ""@en . "Author affiliation: Institut Fourier, Universit\u00E9 Grenoble 1"@en . "10.14288/1.0307154"@en . "eng"@en . "Unreviewed"@en . "Vancouver : University of British Columbia Library"@en . "Banff International Research Station for Mathematical Innovation and Discovery"@en . "Attribution-NonCommercial-NoDerivatives 4.0 International"@en . "http://creativecommons.org/licenses/by-nc-nd/4.0/"@en . "Faculty"@en . "BIRS Workshop Lecture Videos (Banff, Alta)"@en . "Mathematics"@en . "Quantum theory"@en . "Partial differential equations"@en . "Applied computer science"@en . "Representations of canonical commutation relations describing infinite coherent states"@en . "Moving Image"@en . "http://hdl.handle.net/2429/58559"@en .