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Dissipation, noise and vacuum decay in quantum field theory

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We study the process of vacuum decay in quantum field theory focusing on the stochastic aspects of the interaction between long- and short-wavelength modes. This interaction results in a diffusive behavior of the reduced Wigner function describing the state of long-wavelength modes, and thereby to a finite activation rate even at zero temperature. This effect can make a substantial contribution to the total decay rate.

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CALZETTA, Esteban A., ROURA CRUMOLS, Albert and VERDAGUER OMS, Enric. Dissipation, noise and vacuum decay in quantum field theory. Physical Review Letters. 2002. Vol. 88, num. 1, pags. 010403-1-010403-4. ISSN 0031-9007. [consulted: 24 of May of 2026]. Available at: https://hdl.handle.net/2445/13192

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