Abstract / Description of output
We formulate the three dimensional Thirring model on a spacetime lattice and study it for various even numbers of fermion flavors N_f by Monte Carlo simulation. We find clear evidence for spontaneous chiral symmetry breaking at strong coupling, contradicting the predictions of the 1/N_f expansion. The critical point appears to correspond to an ultra-violet fixed point of the renormalisation group; a fit to a RG-inspired equation of state in the vicinity of the fixed point yields distinct critical exponents for N_f=2 and N_f=4, while no fit is found for N_f=6, suggesting there is a critical number N_fc
Original language | English |
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Pages (from-to) | 269–308 |
Journal | Nuclear physics b |
Volume | 502 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 30 Jan 1997 |
Keywords / Materials (for Non-textual outputs)
- hep-lat
- hep-th
- Four-Fermi
- Monte Carlo simulation
- Dynamical fermions
- Chiral symmetry breaking
- Renormalisation group fixed point