2020-10-30T10:27:52Zhttp://edoc.mpg.de/ac_ft_oai.ploai:edoc.mpg.de:622532005-02-0837:452
On a renormalized QCD-inspired model in the light-cone formulation
Frewer, Michael
expertsonly
Dissertation, Ruprecht-Karls-Universität
2003
PhD-Thesis
http://edoc.mpg.de/62253
en
oai:edoc.mpg.de:632782004-12-3037:452
Time Reversal and Exceptional Points
Harney, H.L.
Heiss, W.D.
expertsonly
Eigenvectors of decaying quantum systems are studied at exceptional points of the Hamiltonian. Special attention is paid to the properties of the system under time reversal symmetry breaking.
At the exceptional point the chiral character of the system ---found for time reversal symmetry --- generically persists. It is,however, no longer circular but rather elliptic.
2004
Article
http://edoc.mpg.de/63278
The European Physical Journal D, v.29, 429-432 (2004)
en
oai:edoc.mpg.de:632852004-12-3037:452
Encircling an Exceptional Point
Dembowski, C.
Dietz, B.
Gräf, H.D.
Harney, H.L.
Heine, A.
Heiss, W.D.
Richter, A.
expertsonly
We calculate analytically the geometric phases that
the eigenvectors of a parametric dissipative two-state system described by a
complex symmetric Hamiltonian pick up
when an exceptional point (EP) is encircled. An EP is a parameter
setting where the two eigenvalues and the corresponding eigenvectors of
the Hamiltonian coalesce. We show that it can be
encircled on a path along which the eigenvectors remain approximately
real and discuss a microwave cavity experiment, where such an encircling of
an EP was realized. Since the wavefunctions remain
approximately real, they could be reconstructed
from the nodal lines of the recorded spatial intensity distributions
of the electric fields inside the resonator. We measured the geometric
phases that occur when an EP is encircled four times and thus confirmed
that for our system an EP is a branch point of fourth order.
2004
Article
http://edoc.mpg.de/63285
Physical Review E, v.69 (2004)
en
oai:edoc.mpg.de:1259142005-02-0837:452
Über den Zwei-Gluon-Annihilations-Term in einem effektiven Lichtkegel-Hamiltonoperator
Krahl, Hans Christian
expertsonly
Diplomarbeit, Ruprecht-Karls Universität
2004
Thesis
http://edoc.mpg.de/125914
de
oai:edoc.mpg.de:2077092005-02-0837:452
Bayesian inference : parameter estimation and decisions ; with numerous examples, and 79 problems with solutions
Harney, H. L.
expertsonly
Springer Verlag
2003
Book
http://edoc.mpg.de/207709
urn:ISBN:3-540-00397-5
en