Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2011-07-05
Physics
Condensed Matter
Strongly Correlated Electrons
8 pages, 1 figure
Scientific paper
We present a 2+1 dimensional quantum gauge theory model with correlated fermions that is exactly solvable by bosonization. This model gives an effective description of partially gapped fermions on a square lattice that have density-density interactions and are coupled to photons. We show that the photons in this model are massive due to gauge-invariant normal-ordering, similarly as in the Schwinger model. Moreover, the exact excitation spectrum of the model has two gapped and one gapless mode. We also compute the magnetic field induced by an external current and show that there is a Meissner effect. We find that the transverse photons have significant effects on the low-energy properties of the model even if the fermion-photon coupling is small.
Langmann Edwin
Woul Jonas de
No associations
LandOfFree
Gauge invariance, correlated fermions, and Meissner effect in 2+1 dimensions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Gauge invariance, correlated fermions, and Meissner effect in 2+1 dimensions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gauge invariance, correlated fermions, and Meissner effect in 2+1 dimensions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-477446