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Bose–Einstein Condensation in a Dilute, Trapped Gas at Positive Temperature

- A. Deuchert, R. Seiringer, J. Yngvason
- PhysicsCommunications in Mathematical Physics
- 14 March 2018

We consider an interacting, dilute Bose gas trapped in a harmonic potential at a positive temperature. The system is analyzed in a combination of a thermodynamic and a Gross–Pitaevskii (GP) limit… Expand

Semiclassical approximation and critical temperature shift for weakly interacting trapped bosons

- A. Deuchert, R. Seiringer
- Physics
- 2 September 2020

Emergence of Non-Abelian Magnetic Monopoles in a Quantum Impurity Problem.

- E. Yakaboylu, A. Deuchert, M. Lemeshko
- PhysicsPhysical review letters
- 15 May 2017

TLDR

Theory of the rotating polaron: Spectrum and self-localization

- E. Yakaboylu, B. Midya, A. Deuchert, Nikolai Leopold, M. Lemeshko
- PhysicsPhysical Review B
- 4 September 2018

We study a quantum impurity possessing both translational and internal rotational degrees of freedom interacting with a bosonic bath. Such a system corresponds to a “rotating polaron,” which can be… Expand

Gross–Pitaevskii Limit of a Homogeneous Bose Gas at Positive Temperature

- A. Deuchert, R. Seiringer
- PhysicsArchive for Rational Mechanics and Analysis
- 31 January 2019

We consider a dilute, homogeneous Bose gas at positive temperature. The system is investigated in the Gross–Pitaevskii limit, where the scattering length a is so small that the interaction energy is… Expand

Intermolecular forces and correlations mediated by a phonon bath.

- Xiang Li, E. Yakaboylu, G. Bighin, R. Schmidt, M. Lemeshko, A. Deuchert
- PhysicsThe Journal of chemical physics
- 5 December 2019

TLDR

Persistence of Translational Symmetry in the BCS Model with Radial Pair Interaction

- A. Deuchert, Alissa Geisinger, C. Hainzl, M. Loss
- Physics
- 10 December 2016

We consider the two-dimensional BCS functional with a radial pair interaction. We show that the translational symmetry is not broken in a certain temperature interval below the critical temperature.… Expand

Dynamics and symmetries of a repulsively bound atom pair in an infinite optical lattice

- A. Deuchert, K. Sakmann, A. Streltsov, O. Alon, L. Cederbaum
- Physics
- 18 February 2012

We investigate the dynamics of two bosons trapped in an infinite one-dimensional optical lattice potential within the framework of the Bose-Hubbard model and derive an exact expression for the… Expand

Note on a Family of Monotone Quantum Relative Entropies

- A. Deuchert, C. Hainzl, R. Seiringer
- Mathematics
- 25 February 2015

Given a convex function $${\varphi}$$φ and two hermitian matrices A and B, Lewin and Sabin study in (Lett Math Phys 104:691–705, 2014) the relative entropy defined by $${\mathcal{H}(A,B)={\rm Tr}… Expand

THE FREE ENERGY OF THE TWO-DIMENSIONAL DILUTE BOSE GAS. I. LOWER BOUND

- A. Deuchert, S. Mayer, R. Seiringer
- MathematicsForum of Mathematics, Sigma
- 8 October 2019

We prove a lower bound for the free energy (per unit volume) of the two-dimensional Bose gas in the thermodynamic limit. We show that the free energy at density $\unicode[STIX]{x1D70C}$ and inverse… Expand

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