TY  - JOUR
A1  - Kröger, Helmut
A1  - Hosseinizadeh, Ahmad
A1  - Laprise, Jean-François
A1  - Kröger, Jens
T1  - Spectrum and wave functions of excited states in lattice gauge theory
T2  - Proceedings of Science
N2  - We suggest a new method to compute the spectrum and wave functions of excited states. We construct a stochastic basis of Bargmann link states, drawn from a physical probability density distribution and compute transition amplitudes between stochastic basis states. From such transition matrix we extract wave functions and the energy spectrum. We apply this method toU(1)2+1 lattice gauge theory. As a test we compute the energy spectrum, wave functions and thermodynamical functions of the electric Hamiltonian and compare it with analytical results. We find excellent agreement. We observe scaling of energies and wave functions in the variable of time. We also present first results on a small lattice for the full Hamiltonian including the magnetic term.
Y1  - 2008
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/7947
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-60919
UR  - https://pos.sissa.it/066/235/pdf
SN  - 1824-8039
N1  - Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence. http://pos.sissa.it/
VL  - 2008
IS  - (LATTICE 2008)235
SP  - 1
EP  - 7
PB  - SISSA
CY  - Trieste
ER  -