Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Kroeger, Helmut"'
Publikováno v:
Physical Review Letters 97: 118102, 2006.
Many complex systems display self-organized critical states characterized by 1/f frequency scaling of power spectra. Global variables such as the electroencephalogram, scale as 1/f, which could be the sign of self-organized critical states in neurona
Externí odkaz:
http://arxiv.org/abs/q-bio/0608026
Publikováno v:
Nucl.Phys.Proc.Suppl.129:895-897,2004
We check the eigenvalue spectrum of the $\Phi^{4}_{1+1}$ Hamiltonian against Poisson or Wigner behavior predicted from random matrix theory. We discuss random matrix theory as a tool to discriminate the validity of a model Hamiltonian compared to an
Externí odkaz:
http://arxiv.org/abs/hep-lat/0309095
Publikováno v:
Biophysics Journal 86 (2004) 1829-1842
Extracellular local field potentials (LFP) are usually modeled as arising from a set of current sources embedded in a homogeneous extracellular medium. Although this formalism can successfully model several properties of LFPs, it does not account for
Externí odkaz:
http://arxiv.org/abs/physics/0303057
Publikováno v:
Physica B 284-288 (2000) 2032
We consider tunnel microrefrigerators at low temperature. There is a number of experimental studies performed on microrefrigeration in tunneling superconductor--normal metal (SN) structures. Related to these experiments, only the electron subsystem h
Externí odkaz:
http://arxiv.org/abs/cond-mat/9909170
Publikováno v:
Phys.Rev. D60 (1999) 014501
QCD in two dimensions is investigated using the improved fermionic lattice Hamiltonian proposed by Luo, Chen, Xu, and Jiang. We show that the improved theory leads to a significant reduction of the finite lattice spacing errors. The quark condensate
Externí odkaz:
http://arxiv.org/abs/hep-lat/9811034
Autor:
Kröger, Helmut, Scheu, Norbert
Publikováno v:
Phys.Lett. B429 (1998) 58-63
We present a non-perturbative study of the massive Schwinger model. We use a Hamiltonian approach, based on a momentum lattice corresponding to a fast moving reference frame, and equal time quantization. We present numerical results for the mass spec
Externí odkaz:
http://arxiv.org/abs/hep-lat/9804024
Publikováno v:
Nucl.Phys.Proc.Suppl. 63 (1998) 931-933
Improvement of the Hamiltonian in lattice gauge theory is considered. We give explicit expressions for classical improvement and discuss also quantum corrections.
Comment: 3 pages, Latex. Presented at Lattice 97: 15th International Symposium on
Comment: 3 pages, Latex. Presented at Lattice 97: 15th International Symposium on
Externí odkaz:
http://arxiv.org/abs/hep-lat/9711042
Publikováno v:
In Nuclear Physics B (Proceedings Supplements) 2004 129:895-897
Publikováno v:
In Biophysical Journal 2004 86(3):1829-1842