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Open Quantum Systems Decoherence

Coherent functional expansions in quantum field theory

arXiv

Authors: P. D. Drummond

Year

2016

Paper ID

42144

Status

Preprint

Abstract Read

~2 min

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N/A

Abstract

A new formalism is introduced to treat problems in quantum field theory, using coherent functional expansions rather than path integrals. The basic results and identities of this approach are developed. In the case of a Bose gas with point-contact interactions, this leads to a soluble functional equation in the weak interaction limit, where the perturbing term is part of the kinetic energy. This approach has the potential to prevent the Dyson problem of divergence in perturbation theory.

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This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
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A new formalism is introduced to treat problems in quantum field theory, using coherent functional expansions rather than path integrals.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1611.09725 [2] arXiv https://arxiv.org/abs/1611.09725 [3] Publisher https://arxiv.org/abs/1611.09725

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