#### Filter Results:

- Full text PDF available (31)

#### Publication Year

1998

2013

- This year (0)
- Last 5 years (1)
- Last 10 years (9)

#### Publication Type

#### Co-author

#### Journals and Conferences

Learn More

- H. Panagopoulos, A. Skouroupathis, Antonios S. Tsapalis
- 2006

We calculate the perturbative value of the Free Energy in Lattice QCD in three dimensions, up to three loops. Our calculation is performed using the Wilson formulation for gluons in SU (N) gaugeâ€¦ (More)

- Constantinos Alexandrou, Th. Leontiou, John W. Negele, Antonios S. Tsapalis
- Physical review letters
- 2007

We evaluate the N to Delta axial transition form factors in lattice QCD with no dynamical sea quarks, with two degenerate flavors of dynamical Wilson quarks, and using domain wall valence fermionsâ€¦ (More)

- Constantinos Alexandrou, Ph de Forcrand, Hector Neff, John W. Negele, Wolfram Schroers, Antonios S. Tsapalis
- Physical review letters
- 2005

The magnetic dipole (M1), the electric quadrupole (E2), and the Coulomb quadrupole (C2) amplitudes for gammaN-->Delta are calculated in quenched lattice QCD. Using a new method, which combines anâ€¦ (More)

- J L Alexandre, K. Farakos, P. Pasipoularides, Antonios S. Tsapalis

We study a Lifshitz-type model in 3+1 dimensions, for a dynamical critical exponent z=3, with a scalar and a fermion field coupled via a Yukawa interaction. Using the non-perturbative Schwinger-Dysonâ€¦ (More)

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 163 Ã—32, 243 Ã—32 andâ€¦ (More)

- Constantinos Alexandrou, Ph. de Forcrand, +4 authors Antonios S. Tsapalis
- 2002

We present results on the ratio of electric quadrupole to magnetic dipole amplitudes, REM = GE2/GM1, for the transition Î³N â†’ âˆ† from lattice QCD. We consider both the quenched and the 2-flavor theory.

Citation Alexandrou, C. et al. " Nucleon to Delta Transition Form Factors with NF=2+1 Domain Wall Fermions. Article is made available in accordance with the publisher's policy and may be subject toâ€¦ (More)

- Constantinos Alexandrou, Ph. de Forcrand, +5 authors Antonios S. Tsapalis
- 2003

We present results on the ratio of electric quadrupole to magnetic dipole amplitudes, REM = GE2/GM1, for the transition Î³N â†’ âˆ† from lattice QCD. We consider both the quenched and the 2-flavor theory.

- Constantia Alexandrou, Robert Edwards, +6 authors Antonios S. Tsapalis
- 2005

The N to âˆ† transition form factors G M1 , G E2 and G C2 are evaluated using dynamical MILC configurations and valence domain wall fermions at three values of quark mass corresponding to pion mass 606â€¦ (More)