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• "Universal spatial correlations in random spinor fields", Urbina, Richter, Adagideli, Wimmer, Bauernfeind, Espitia, 2013

  Publikation

  We identify universal spatial fluctuations in systems with nontrivial spin dynamics. To this end we calculate by exact numerical diagonalization a...

  Publikation auf epub.uni-regensburg.de: "Universal spatial correlations in random spinor fields" (externer Link, öffnet neues Fenster)

• "Random quantum states: recent developments and applications", Urbina, Richter, 2013

  Publikation

  We review the methods and use of random quantum states with particular emphasis on recent theoretical developments and applications in various fields....

  Publikation auf epub.uni-regensburg.de: "Random quantum states: recent developments and applications" (externer Link, öffnet neues Fenster)

• "The Weyl expansion for systems of independent identical particles", Hummel, Urbina, Richter, 2013

  Publikation

  We present a novel analytical approach for the calculation of the mean density of states in many-body systems consisting of confined indistinguishable...

  Publikation auf epub.uni-regensburg.de: "The Weyl expansion for systems of independent identical particles" (externer Link, öffnet neues Fenster)

• "Coherent Backscattering in Fock Space: a Signature of Quantum Many-Body Interference in Interacting Bosonic Systems", Engl, Dujardin, Argüelles, Schlagheck, Richter, Urbina, 2014

  Publikation

  We predict a generic signature of quantum interference in many-body bosonic systems resulting in a coherent enhancement of the average return...

  Publikation auf epub.uni-regensburg.de: "Coherent Backscattering in Fock Space: a Signature of Quantum Many-Body Interference in Interacting Bosonic Systems" (externer Link, öffnet neues Fenster)

• "The semiclassical propagator in fermionic Fock space", Engl, Plößl, Urbina, Richter, 2014

  Publikation

  We present a rigorous derivation of a semiclassical propagator for anticommuting (fermionic) degrees of freedom, starting from an exact representation...

  Publikation auf epub.uni-regensburg.de: "The semiclassical propagator in fermionic Fock space" (externer Link, öffnet neues Fenster)

• "Complex scattering as canonical transformation: A semiclassical approach in Fock space", Engl, Urbina, Hummel, Richter, 2015

  Publikation

  We show that a theory of complex scattering between many-body (Fock) states can be constructed such that its classical limit is a canonical...

  Publikation auf epub.uni-regensburg.de: "Complex scattering as canonical transformation: A semiclassical approach in Fock space" (externer Link, öffnet neues Fenster)

• "Describing many-body bosonic waveguide scattering with the truncated Wigner method", Dujardin, Engl, Urbina, Schlagheck, 2015

  Publikation

  We consider quasi-stationary scattering of interacting bosonic matter waves in one-dimensional waveguides, as they arise in guided atom lasers. We...

  Publikation auf epub.uni-regensburg.de: "Describing many-body bosonic waveguide scattering with the truncated Wigner method" (externer Link, öffnet neues Fenster)

• "Aspects of Integrability in a Classical Model for Non-Interacting Fermionic Fields", Grosse-Holz, Engl, Richter, Urbina, 2015

  Publikation

  In this work we investigate the issue of integrability in a classical model for non-interacting fermionic fields. This model is constructed via...

  Publikation auf epub.uni-regensburg.de: "Aspects of Integrability in a Classical Model for Non-Interacting Fermionic Fields" (externer Link, öffnet neues Fenster)

• "Periodic mean-field solutions and the spectra of discrete bosonic fields: Trace formula for Bose-Hubbard models", Engl, Urbina, Richter, 2015

  Publikation

  We consider the many-body spectra of interacting bosonic quantum fields on a lattice in the semiclassical limit of large particle number N. We show...

  Publikation auf epub.uni-regensburg.de: "Periodic mean-field solutions and the spectra of discrete bosonic fields: Trace formula for Bose-Hubbard models" (externer Link, öffnet neues Fenster)

• "Bardeen-Cooper-Schrieffer Theory of Finite-Size Superconducting Metallic Grains", Garcia-Garcia, Urbina, Yuzbashyan, Richter, Altshuler, 2008

  Publikation

  We study finite-size effects in superconducting metallic grains and determine the BCS order parameter and the low energy excitation spectrum in terms...

  Publikation auf epub.uni-regensburg.de: "Bardeen-Cooper-Schrieffer Theory of Finite-Size Superconducting Metallic Grains" (externer Link, öffnet neues Fenster)