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6 papers
Volterra's realization of the KM-system
M. A. Agrotis, P. A. Damianou
We construct a symplectic realization of the KM-system and obtain the higher order Poisson tensors and commuting flows via the use of a recursion operator. This is achieved by doub…
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^…
Topological charge renormalization: A test case for 3-loop vacuum calculations using overlap fermions and Symanzik improved gluons
A. Skouroupathis, H. Panagopoulos
We calculate perturbative renormalization properties of the topological charge, using the standard lattice discretization given by a product of twisted plaquettes. We use the overl…
On the geometry of complete intersection toric varieties
Nickolas Michelacakis, Apostolos Thoma
In this paper we give a geometric characterization of the cones of toric varieties that are complete intersections. In particular, we prove that the class of complete intersection…
N-ality and topology at finite temperature
L. Del Debbio, H. Panagopoulos, E. Vicari
We study the spectrum of confining strings in SU(3) pure gauge theory, in different representations of the gauge group. Our results provide direct evidence that the string spectrum…
Natural radioelement concentration in the Troodos Ophiolite Complex of Cyprus
Michalis Tzortzis, Haralabos Tsertos
High-resolution gamma-ray spectrometry was exploited to determine naturally occurring thorium (Th), uranium (U) and potassium (K) elemental concentrations in the whole area covered…