Britain is caught in a Covid doom loop, the pattern of which is becoming depressingly familiar. A new variant of the virus appears. It spreads rapidly. Restrictions are imposed to slow transmission rates and to take pressure off the NHS, but the economy suffers.

For 2D systems, going beyond first order pertu[r]bative calculations, we show that the second harmonic of the current is strongly suppressed in the case of spinless fermion models but significantly enhanced for the Hubbard model.

to scour a horse

The fact is, they are not nearly as bummy as a lot of the characters we have back home.