Dr. Daniel Braak

DFG-Gruppenleiter
Theoretische Physik III
Telefon: +49-(0)-821-598-3710
E-Mail:
Raum: 445 (S)
Adresse: Universitätsstraße 1 (Physik Süd), 86159 Augsburg

DFG-Gruppenleiter

Leiter des Forschungsprojekts "Exakte Lösungen von stark wechselwirkenden Modellen der Quantenoptik", gefördert durch die Deutsche Forschungsgemeinschaft (DFG), Projekt-Nr. 439943572.

 

 

Research Interests

  • strong light-matter interaction
  • integrable systems; definitions of quantum integrability
  • quantum mechanics in Hilbert spaces of analytic functions; spectral theory
  • topological properties of condensed matter
  • quantum thermodynamics
 

Selected Publications

 

Publications

2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2007 | 2005 | 2002 | 2001 | 1999 | 1994 | 1993

2023

Daniel Braak
Spectral determinant of the two‐photon quantum Rabi model

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2022

Daniel Braak, Murray T. Batchelor und Qing-Hu Chen
Comment on 'Parameter-dependent unitary transformation approach for quantum Rabi model'

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Zu-Jian Ying, Simone Felicetti, Gang Liu und Daniel Braak
Critical quantum metrology in the non-linear quantum Rabi model

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Stefan Gorol, Florian Loder, Daniel Braak, Arno P. Kampf und Thilo Kopp
Signatures of topological phase transitions in the S‐Wave superconductor at finite temperature

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2021

Philipp Bredol, Hans Boschker, Daniel Braak und Jochen Mannhart
Decoherence effects break reciprocity in matter transport

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Xiang-You Chen, Liwei Duan, Daniel Braak und Qing-Hu Chen
Multiple ground-state instabilities in the anisotropic quantum Rabi model

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Cid Reyes-Bustos, Daniel Braak und Masato Wakayama
Remarks on the hidden symmetry of the asymmetric quantum Rabi model

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2020

Daniel Braak und Jochen Mannhart
Fermi's golden rule and the second law of thermodynamics

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2019

Patrick Seiler, Elias Lettl, Daniel Braak und Thilo Kopp
Antilocalization in oxides: effective spin-3/2 model

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Jochen Mannhart und Daniel Braak
Lossless currents at high temperatures

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Jochen Mannhart, Philipp Bredol und Daniel Braak
Phase filters for a novel kind of asymmetric transport – scientific prospects and opportunities for possible applications

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Aram Manaselyan, Wenchen Luo, Daniel Braak und Tapash Chakraborty
Seeking Maxwell's Demon in a non-reciprocal quantum ring

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Daniel Braak
Symmetries in the quantum Rabi model

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Patrick Seiler, Elias Lettl, Daniel Braak und Thilo Kopp
Weak antilocalization within a genuine multiband model

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2018

Patrick Seiler, Jone Zabaleta, Robin Wanke, Jochen Mannhart, Thilo Kopp und Daniel Braak
Antilocalization at an oxide interface

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2017

M. Sanz, Daniel Braak, E. Solano und I. L. Egusquiza
Entanglement classification with algebraic geometry

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Florian Loder, Arno P. Kampf, Thilo Kopp und Daniel Braak
Momentum-space spin texture in a topological superconductor

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2016

Daniel Braak
Analytical solutions of basic models in quantum optics

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Daniel Braak, Qing-Hu Chen, Murray T. Batchelor und Enrique Solano
Semi-classical and quantum Rabi models: in celebration of 80 years

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Liwei Duan, You-Fei Xie, Daniel Braak und Qing-Hu Chen
Two-photon Rabi model: analytic solutions and spectral collapse

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2015

Liwei Duan, Shu He, Daniel Braak und Qing-Hu Chen
Solution of the two-mode quantum Rabi model using extended squeezed states

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S. Felicetti, J. S. Pedernales, I. L. Egusquiza, G. Romero, L. Lamata, Daniel Braak und E. Solano
Spectral collapse via two-phonon interactions in trapped ions

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2014

Daniel Braak, J. M. Zhang und Marcus Kollar
Integrability and weak diffraction in a two-particle Bose–Hubbard model

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Jie Peng, Zhongzhou Ren, Daniel Braak, Guangjie Guo, Guoxing Ju, Xin Zhang und Xiaoyong Guo
Solution of the two-qubit quantum Rabi model and its exceptional eigenstates

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2013

Daniel Braak
A generalized G-function for the Quantum Rabi Model

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J. M. Zhang, Daniel Braak und Marcus Kollar
Bound states in the one-dimensional two-particle Hubbard model with an impurity

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Daniel Braak
Continued fractions and the Rabi model

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F. A. Wolf, F. Vallone, G. Romero, Marcus Kollar, E. Solano und Daniel Braak
Dynamical correlation functions and the quantum Rabi model

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Daniel Braak
Solution of the Dicke model for N=3

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2012

J. M. Zhang, Daniel Braak und Marcus Kollar
Bound states in the continuum realized in the one-dimensional two-particle Hubbard model with an impurity

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F. Alexander Wolf, Marcus Kollar und Daniel Braak
Exact real-time dynamics of the quantum Rabi model

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2011

Daniel Braak
Integrability of the Rabi model

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2007

Daniel Braak
Conductivity of a quasiperiodic system in two and three dimensions

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2005

Joachim Deisenhofer, Daniel Braak, Hans-Albrecht Krug von Nidda, Joachim Hemberger, R. M. Eremina, V. A. Ivanshin, A. M. Balbashov, G. Jug, T. Kimura, Yoshinori Tokura und Alois Loidl
Observation of a Griffiths phase in paramagnetic La1-xSrxMnO3

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2002

Frieder Kalisch und Daniel Braak
Exact density of states for finite Gaussian random matrix ensembles via supersymmetry

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2001

Daniel Braak und Natan Andrei
On the spectrum of the XXZ-chain at roots of unity

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1999

Daniel Braak und Natan Andrei
Physical picture of the gapped excitation spectrum of the one-dimensional Hubbard model

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1994

Daniel Braak, F. Sievers und Klaus G. Ziegler
Competition of phonons and magnetic interaction in one-dimensional Fermion systems

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1993

Daniel Braak
Spontaneous magnetization in the disorder-dominated phase of the two-dimensional random-bond Ising model

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