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5 papers
The volume dependence of spectral weights and the pentaquark state
Constantia Alexandrou, Antonios Tsapalis
Before studying the pentaquark system we examine the spectral weights of the two lowest scattering states in the two-pion system in the isospin I=2 channel on lattices of size $16^…
The Infrared behaviour of the gluon propagator in SU(2) and SU(3) without lattice Gribov copies
C. Alexandrou, Ph. de Forcrand, E. Follana
We present lattice results for the gluon propagator for SU(2) and SU(3) in the Laplacian gauge which avoids lattice Gribov copies. In SU(3) we compare with the most recent lattice…
The Feynman Variational Principle in the Worldline Representation of Field Theory
R. Rosenfelder, C. Alexandrou, A. W. Schreiber
Following Feynman's treatment of the non-relativistic polaron problem, similar techniques are used to study relativistic field theories: after integrating out the bosonic degrees o…
Thermodynamics of One-flavour QCD
C. Alexandrou, A. Boriçi, A. Feo +4
We give a brief introduction on finite temperature phase transitions in lattice QCD including a discussion on the identification of first order transitions. We present a study of t…
Masses and decay constants of the B-system in Lattice QCD
C. Alexandrou
Heavy-light bound states are studied in Lattice QCD with emphasis on parameters of the B-system relevant to experiment. Results are obtained on lattices with lattice spacings from…