Two Coupling Phase Diagram for Hamiltonian Lattice {QED} - INSPIRE

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Two Coupling Phase Diagram for Hamiltonian Lattice {QED}

D.G. Caldi
(
- Connecticut U. and
- Yale U.
)

Sep, 1988

4 pages

Published in:

Phys.Lett.B 215 (1988) 739-742

Published: 1988

DOI:

10.1016/0370-2693(88)90052-4

Report number:

Print-88-0728 (CONNECTICUT)

View in:

ADS Abstract Service

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Abstract: (Elsevier)

We calculate the phase diagram obtained by varying a chirally invariant four-fermion interaction as well as the usual gauge coupling g in hamiltonian lattice QED. We employ a strong-coupling expansion to fourth order ( 1 g 8 ) and monitor poles in the Padé approximants to find the critical gauge coupling g c . We find that the new phase of QED can be reached even for weak g if the four-fermion coupling is sufficiently strong.

QUANTUM ELECTRODYNAMICS
LATTICE FIELD THEORY: CRITICAL PHENOMENA
LATTICE FIELD THEORY: HAMILTONIAN FORMALISM
APPROXIMATION: PADE
FERMION
INVARIANCE: CHIRAL
NUMERICAL CALCULATIONS
STRONG COUPLING: EXPANSION
NUMERICAL CALCULATIONS: MONTE CARLO

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