Activities per year
We study the phenomenon of negative energy densities in quantum field theories with self-interaction. Specifically, we consider a class of integrable models (including the sinh-Gordon model) in which we investigate the expectation value of the energy density in one-particle states. In this situation, we classify the possible form of the stress-energy tensor from first principles. We show that one-particle states with negative energy density generically exist in non-free situations, and we establish lower bounds for the energy density (quantum energy inequalities). Demanding that these inequalities hold reduces the ambiguity in the stress-energy tensor, in some situations fixing it uniquely. Numerical results for the lowest spectral value of the energy density allow us to demonstrate how negative energy densities depend on the coupling constant and on other model parameters.
|Number of pages||15|
|Journal||Physical Review D|
|Publication status||Published - 1 Mar 2016|
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- Mathematical Physics
- High Energy Physics - Theory
Spectrum of the energy density in integrable models
Henning Bostelmann (Invited speaker)14 Nov 2014
Activity: Talk or presentation › Invited talk
35th LQP Workshop "Foundations and Constructive Aspects of QFT"
Henning Bostelmann (Speaker)14 Nov 2014 → 15 Nov 2014
Activity: Participating in or organising an event › Conference participation