A correlation estimate for quantum many-body systems at positive temperature

R. Seiringer, Reviews in Mathematical Physics 18 (2006) 233–253.


Journal Article | Published
Abstract
We present an inequality that gives a lower bound on the expectation value of certain two-body interaction potentials in a general state on Fock space in terms of the corresponding expectation value for thermal equilibrium states of non-interacting systems and the difference in the free energy. This bound can be viewed as a rigorous version of first-order perturbation theory for many-body systems at positive temperature. As an application, we give a proof of the first two terms in a high density (and high temperature) expansion of the free energy of jellium with Coulomb interactions, both in the fermionic and bosonic case. For bosons, our method works above the transition temperature (for the non-interacting gas) for Bose-Einstein condensation.
Publishing Year
Date Published
2006-04-01
Journal Title
Reviews in Mathematical Physics
Volume
18
Issue
3
Page
233 - 253
IST-REx-ID

Cite this

Seiringer R. A correlation estimate for quantum many-body systems at positive temperature. Reviews in Mathematical Physics. 2006;18(3):233-253. doi:10.1142/S0129055X06002632
Seiringer, R. (2006). A correlation estimate for quantum many-body systems at positive temperature. Reviews in Mathematical Physics, 18(3), 233–253. https://doi.org/10.1142/S0129055X06002632
Seiringer, Robert. “A Correlation Estimate for Quantum Many-Body Systems at Positive Temperature.” Reviews in Mathematical Physics 18, no. 3 (2006): 233–53. https://doi.org/10.1142/S0129055X06002632.
R. Seiringer, “A correlation estimate for quantum many-body systems at positive temperature,” Reviews in Mathematical Physics, vol. 18, no. 3, pp. 233–253, 2006.
Seiringer R. 2006. A correlation estimate for quantum many-body systems at positive temperature. Reviews in Mathematical Physics. 18(3), 233–253.
Seiringer, Robert. “A Correlation Estimate for Quantum Many-Body Systems at Positive Temperature.” Reviews in Mathematical Physics, vol. 18, no. 3, World Scientific Publishing, 2006, pp. 233–53, doi:10.1142/S0129055X06002632.

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