Persistence of the spectral gap for the Landau–Pekar equations

Author:

Feliciangeli DarioORCID,Rademacher Simone,Seiringer Robert

Abstract

AbstractThe Landau–Pekar equations describe the dynamics of a strongly coupled polaron. Here, we provide a class of initial data for which the associated effective Hamiltonian has a uniform spectral gap for all times. For such initial data, this allows us to extend the results on the adiabatic theorem for the Landau–Pekar equations and their derivation from the Fröhlich model obtained in previous works to larger times.

Funder

H2020 Excellent Science

H2020 Marie Sklodowska-Curie Actions

Publisher

Springer Science and Business Media LLC

Subject

Mathematical Physics,Statistical and Nonlinear Physics

Reference10 articles.

1. Frank, R.L., Gang, Z.: Derivation of an effective evolution equation for a strongly coupled polaron. Anal. PDE 10(2), 379–422 (2017)

2. Frank, R.L., Gang, Z.: A non-linear adiabatic theorem for the one-dimensional Landau- Pekar equations. J. Funct. Anal. 279, 7 (2020)

3. Frank, R. L., Seiringer, R.: Quantum corrections to the Pekar asymptotics of a strongly coupled polaron. Commun. Pure Appl. Math. 74, 544–588 (2021)

4. Fröhlich, H.: Theory of electrical breakdown in ionic crystals. Proc. R. Soc. Lond. A 160(901), 230–241 (1937)

5. Landau, L.D., Pekar, S.I.: Effective mass of a polaron. Zh. Eksp. Teor. Fiz. 18(5), 419–423 (1948)

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