ar X iv : 0 80 4 . 03 00 v 1 [ he p - la t ] 2 A pr 2 00 8 The Phases of Non - Compact QED

ar X iv : 0 80 4 . 03 00 v 2 [ he p - la t ] 1 1 A pr 2 00 8 The Phases of Non - Compact QED 3

Non-compact three-dimensional QED is studied by computer simulations to understand its chiral symmetry breaking features for different values of the number of fermion flavors N f . We consider the four-component formulation for the fermion fields, which arises naturally as the continuum limit of the staggered fermion construction in (2+1) dimensions. We present preliminary results for the equat...

ar X iv : h ep - p h / 04 03 25 0 v 3 8 A pr 2 00 4 Phase Structure of Non - Compact QED 3 and the Abelian Higgs Model ∗

We review the phase structure of a three-dimensional, non-compact Abelian gauge theory (QED3) as a function of the number N of 4-component massless fermions. There is a critical N c up to which there is dynamical fermion mass generation and an associated global symmetry breaking. We discuss various approaches to the determination of N c , which lead to estimates ranging from N c = 1 to N c = 4....

ar X iv : h ep - t h / 03 02 00 7 v 3 2 8 A pr 2 00 3 April 2003 Stability Issues for w < − 1 Dark Energy

Precision cosmological data hint that a dark energy with equation of state w = P/ρ < −1 and hence dubious stability is viable. Here we discuss for any w nucleation from Λ > 0 to Λ = 0 in a first-order phase transition. The critical radius is argued to be at least of galactic size and the corresponding nucleation rate glacial, thus underwriting the dark energy’s stability and rendering remote an...

ar X iv : h ep - p h / 04 03 25 0 v 2 7 A pr 2 00 4 Phase Structure of Non - Compact QED 3 and the Abelian Higgs Model ∗

We review the phase structure of a three-dimensional, non-compact Abelian gauge theory (QED3) as a function of the number N of 4-component massless fermions. There is a critical N c up to which there is dynamical fermion mass generation and an associated global symmetry breaking. We discuss various approaches to the determination of N c , which lead to estimates ranging from N c = 1 to N c = 4....

ar X iv : h ep - p h / 02 03 04 2 v 2 4 A pr 2 00 2 Once more on mixing of the a 0 ( 980 ) and f 0 ( 980 ) mesons