Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Drescher, Moritz"'
The functional determinant approach (FDA) is a simple method to compute exactly certain observables for ideal quantum systems and has been successfully applied to the Fermi polaron problem to obtain the dynamical overlap and spectral function. Unfort
Externí odkaz:
http://arxiv.org/abs/2403.13582
Publikováno v:
Phys. Rev. A 107, 063301 (2023)
We consider two heavy particles immersed in a Bose-Einstein condensate in three dimensions and compute their mutual interaction induced by excitations of the medium. For an ideal Bose gas, the induced interaction is Newtonian up to a shift in distanc
Externí odkaz:
http://arxiv.org/abs/2303.01916
Publikováno v:
Phys. Rev. A 103, 033317 (2021)
We give a detailed account of a stationary impurity in an ideal Bose-Einstein condensate, which we call the ideal Bose polaron, at both zero and non-zero temperatures and arbitrary strength of the impurity-boson coupling. The time evolution is solved
Externí odkaz:
http://arxiv.org/abs/2011.06385
Autor:
Tran, Binh, Rautenberg, Michael, Gerken, Manuel, Lippi, Eleonora, Zhu, Bing, Ulmanis, Juris, Drescher, Moritz, Salmhofer, Manfred, Enss, Tilman, Weidemüller, Matthias
Publikováno v:
Braz J Phys (2020)
In this article, we revisit the heteronuclear Efimov effect in a Bose-Fermi mixture with large mass difference in the Born-Oppenheimer picture. As a specific example, we consider the combination of bosonic $^{133}\mathrm{Cs}$ and fermionic $^6\mathrm
Externí odkaz:
http://arxiv.org/abs/2009.13221
Autor:
Enss, Tilman, Tran, Binh, Rautenberg, Michael, Gerken, Manuel, Lippi, Eleonora, Drescher, Moritz, Zhu, Bing, Weidemüller, Matthias, Salmhofer, Manfred
Publikováno v:
Phys. Rev. A 102, 063321 (2020)
Impurities in a Fermi sea, or Fermi polarons, experience a Casimir interaction induced by quantum fluctuations of the medium. When there is short-range attraction between impurities and fermions, also the induced interaction between two impurities is
Externí odkaz:
http://arxiv.org/abs/2009.03029
Publikováno v:
Phys. Rev. Research 2, 032011(R) (2020)
We investigate a Bose-Einstein condensate in strong interaction with a single impurity particle. While this situation has received considerable interest in recent years, the regime of strong coupling remained inaccessible to most approaches due to an
Externí odkaz:
http://arxiv.org/abs/2003.01982
Publikováno v:
Phys. Rev. A 99, 023601 (2019)
We investigate the formation of a Bose polaron when a single impurity in a Bose-Einstein condensate is quenched from a non-interacting to an attractively interacting state in the vicinity of a Feshbach resonance. We use a beyond-Fr\"ohlich Hamiltonia
Externí odkaz:
http://arxiv.org/abs/1810.11296
Autor:
Drescher, Moritz, Mielke, Andreas
We investigate the behaviour of hard-core bosons in one- and two-dimensional flat band systems, the chequerboard and the kagom\'e lattice and one-dimensional analogues thereof. The one dimensional systems have an exact local reflection symmetry which
Externí odkaz:
http://arxiv.org/abs/1704.03905
Autor:
Pruschak, Gernot, Drescher, Moritz
This project investigates how the economic success and the appearance of narcissistic leadership affect the quitting intentions of employees.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ebe61f93481b9ecf930d664876146a7b
Autor:
Drescher, Moritz
The Bose polaron problem is concerned with an impurity particle moving through a Bose-Einstein condensate, which is an instance of the general concept of a particle in medium. This dissertation investigates the theory of the Bose polaron with a focus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37393e6cb65863c20cc2814b3f747426
http://archiv.ub.uni-heidelberg.de/volltextserver/28820/
http://archiv.ub.uni-heidelberg.de/volltextserver/28820/