TY - JOUR

T1 - Tricritical point in lattice QED

AU - Evertz, H.G.

AU - Jersák, T.

AU - Neuhaus, T.

AU - Zerwas, P.M.

PY - 1985

Y1 - 1985

N2 - The four-dimensional U(1) lattice gauge theory with the action −Σp (γ cos 2θp+γ cos 2θp) is studied by Monte Carlo simulation along the phase transition line separating the confinement and the Coulomb phases. The discontinuity of 〈cos θp〉, determined in the interval 0.2 ⩽ γ ⩽ 0.5, is extrapolated according to a power law and shown to vanish at the tricritical point βTCP = ±449, γTCP=−0.11±0.05 (errors are systematic). A negative value of γTCP means that the phase transition in lattice QED with Wilson action (γ = 0) is of first order.

AB - The four-dimensional U(1) lattice gauge theory with the action −Σp (γ cos 2θp+γ cos 2θp) is studied by Monte Carlo simulation along the phase transition line separating the confinement and the Coulomb phases. The discontinuity of 〈cos θp〉, determined in the interval 0.2 ⩽ γ ⩽ 0.5, is extrapolated according to a power law and shown to vanish at the tricritical point βTCP = ±449, γTCP=−0.11±0.05 (errors are systematic). A negative value of γTCP means that the phase transition in lattice QED with Wilson action (γ = 0) is of first order.

UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-0041183416&partnerID=MN8TOARS

U2 - 10.1016/0550-3213(85)90262-7

DO - 10.1016/0550-3213(85)90262-7

M3 - Article

VL - 251

SP - 279

EP - 298

JO - Nuclear Physics B - Proceedings Supplements

JF - Nuclear Physics B - Proceedings Supplements

SN - 0920-5632

ER -