forxxx

Anonymous (anonymous@undisclosed.example.com) — 2024-02-18T10:15:21+00:00

Modern facets of quantum and stochastic integrability The purpose of the workshop is * to get to know each other more profoundly * to figure out possible collaborations * to find a name for the research unit * to get input for the sketch of the concept which is an important part of the first step of the proposal

inestigators

Anonymous (anonymous@undisclosed.example.com) — 2015-10-26T06:09:58+00:00

Principal Investigators * Prof. Dr. Hermann Boos (Bergische Universität Wuppertal) * Prof. Dr. Holger Frahm (Leibniz Universität Hannover) * Dr. Frank Göhmann (Bergische Universität Wuppertal) * Dr. Michael Karbach (Bergische Universität Wuppertal) * Prof. Dr. Andreas Klümper (Speaker, Bergische Universität Wuppertal) * Prof. Dr. Jesko Sirker (University of Manitoba)

investigators

Anonymous (anonymous@undisclosed.example.com) — 2021-07-28T11:41:07+00:00

Principal Investigators * Prof. Dr. Hermann Boos (Bergische Universität Wuppertal) * Prof. Dr. Holger Frahm (Leibniz Universität Hannover) * Prof. Dr. Frank Göhmann (Bergische Universität Wuppertal) * Prof. Dr. Michael Karbach (Bergische Universität Wuppertal) * Prof. Dr. Andreas Klümper (Speaker, Bergische Universität Wuppertal) * Dr. Imke Schneider (Technische Universität Kaiserslautern) * Prof. Dr. Jesko Sirker (University of Manitoba)

news

Anonymous (anonymous@undisclosed.example.com) — 2019-12-11T15:38:18+00:00

Start of the research group The research group FOR 2316 started October 1, 2015 as announced in a DFG press release of that day. October 15 the news made it to the web-site of Wuppertal University. In November 2018 the research group FOR 2316 was positively evaluated. The work on the projects of the second funding period started in October 2019 with new PhD students and a new postdoc.

open_positions

Anonymous (anonymous@undisclosed.example.com) — 2016-02-29T18:32:50+00:00

Open Positions The Research Unit “Correlations in Integrable Quantum Many-Body Systems” invites applications for several PhD Positions to be filled as soon as possible. Applicants are required to hold a Master's degree in Physics or Mathematics with above average success in the course of their studies.

projects

Anonymous (anonymous@undisclosed.example.com) — 2019-12-11T15:33:50+00:00

Projects first funding period 2016-19 * Non-Abelian Anyons (H. Frahm, J. Sirker) * Dynamical correlation functions of integrable quantum systems (M. Karbach, J. Sirker) * Efficient thermodynamics for strongly correlated fermions and bosons (A. Klümper, H. Frahm) * Equal-time correlation functions of integrable lattice models (F. Göhmann, H. Boos) * Lattice approach to integrable quantum field theories and applications (H. Boos, F. Göhmann) * Spin chains and vertex models bas…

project_p1

Anonymous (anonymous@undisclosed.example.com) — 2015-10-27T08:56:59+00:00

Non-Abelian Anyons Quasiparticles in topological quantum liquids such as the fractional Quantum Hall states and certain two-dimensional frustrated magnets display unconventional quantum statistics. The conserved topological charge of these non-Abelian anyons is protected and has spawned interest for such systems in the context of quantum computation.

project_p2

Anonymous (anonymous@undisclosed.example.com) — 2015-10-26T17:00:39+00:00

Dynamical correlation functions of integrable quantum systems Experiments using cold atoms with and without optical lattices as well as experiments on trapped ions have recently given us access to the dynamics of quantum systems directly in the time domain. Dynamical correlation functions in such systems can by now be studied with single site addressability. This poses a serious challenge for theory to develop novel methods to calculate time-dependent correlations both in equilibrium and fol…

project_p3

Anonymous (anonymous@undisclosed.example.com) — 2015-11-02T13:02:40+00:00

Efficient thermodynamics for strongly correlated fermions and bosons For integrable systems the ground-state energy and excitations are computable in principle. Still, the calculation of thermodynamical properties remains a challenge of its own as all energy levels have to be taken into account. Traditionally the computation of the partition function of integrable systems is achieved by means of the so-called thermodynamic Bethe ansatz (TBA) which is a combinatorial approach typically leading t…

project_p4

Anonymous (anonymous@undisclosed.example.com) — 2015-10-31T12:18:25+00:00

Equal-time correlation functions of integrable lattice models The main objective of this project is the advancement of methods for the exact and efficient calculation of correlation functions of integrable lattice models. In previous work we (and others) have shown that the correlation functions of the spin-1/2 Heisenberg chain and of related integrable models are characterized by a specific structure which we have called factorization: longer-range correlation functions are polynomials in o…

project_p6

Anonymous (anonymous@undisclosed.example.com) — 2015-10-31T13:22:21+00:00

Lattice approach to integrable quantum field theories and applications We shall consider conformal quantum field theories and integrable massive quantum field theories starting from their lattice regularizations provided by the six-vertex model. In previous work we have completely clarified the structure of the correlation functions of this model. We could explain their factorization, that was observed before, by means of a hidden Fermionic structure on the space of (quasi-) local operators.…

project_p7

Anonymous (anonymous@undisclosed.example.com) — 2015-10-27T09:00:15+00:00

Spin Chains and Vertex Models Based on Superalgebras Spin chains and two-dimensional vertex models with an underlying superalgebra structure appear naturally in certain statistical physics models, e.g. intersecting loops, and disordered electron systems. In several examples for such models the low energy effective theory describing their critical behaviour has displayed rather unusual properties: the lack of unitarity in these systems allows for continua of critical exponents leading to a f…

project_p8

Anonymous (anonymous@undisclosed.example.com) — 2015-10-26T16:58:06+00:00

Transport properties of integrable quantum systems Some of the most dramatic consequences of the interplay of reduced dimensionality and quantum eects are observed in transport. Integrable models, which have an infinite number of local conservation laws, are expected to have particularly unusual transport properties. For the integrable spin-1/2 Heisenberg chain the energy current itself is conserved leading to an infinite heat conductance. The spin current operator, on the other hand, is …

publications

Anonymous (anonymous@undisclosed.example.com) — 2026-01-09T17:22:22+00:00

List of Publications 2016 * M. Dugave, F. Göhmann, K. K. Kozlowski and J. Suzuki Asymptotics of correlation functions of the Heisenberg-Ising chain in the easy-axis regime, J. Phys. A 49 (2016) 07LT01 (11pp), (P2) * H. Boos, F. Göhmann, A. Klümper, Kh. S. Nirov and A. V. Razumov

sidebar

Anonymous (anonymous@undisclosed.example.com) — 2015-10-25T18:58:31+00:00

Projects * P1 * P2 * P3 * P4 * P5 * P6 * P7 * P8

start

Anonymous (anonymous@undisclosed.example.com) — 2021-07-28T11:44:15+00:00

Correlations in Integrable Quantum Many-Body Systems The objects of our daily experience, macroscopic pieces of matter, are composed of a very large number of microscopic constituents, ions and electrons, say. One of the major goals of our science (many-body physics) is to explain quantitatively the material properties of macroscopic matter from the properties of its microscopic constituents. This can be achieved by calculating the correlations of local quantities on the microscopic side. Co…

tabs

Anonymous (anonymous@undisclosed.example.com) — 2024-02-13T15:34:40+00:00

* FOR2316 * PI's * Projects * News * Publications * Open Positions * Workshops * FORXXX

workshops

Anonymous (anonymous@undisclosed.example.com) — 2023-07-20T09:41:00+00:00

Opening workshop The first of these workshops will take place April 11-14, 2016 at Wuppertal University. Correlations in Integrable Quantum Many-Body Systems This workshop will focus on the lattice realization of quantum field theories with non-compact degrees of freedom and on functional equations for the calculation of spectra and correlation functions of integrable lattice models.$k_B T$$mc^2$$m$$c$$k_BT/(mc^2)$$_4$$_4$$_2$$_3$$_2$$_2$$_2$$_2$$_8$$Y(gl_2)$$Y(gl_3)$$R$$Y(gl_2)$$Y(gl_3)$$Y(g…

ws4

Anonymous (anonymous@undisclosed.example.com) — 2019-04-13T07:53:03+00:00

60th Birthday of Holger Frahm

DFG Research Unit FOR 2316