Using strong-coupling quantum field theory, we calculate highly accurate critical exponents following from new seven-loop expansions in three dimensions. Our theoretical value for the critical exponent α of the specific heat near the λ point of superfluid helium is α=-0.01294±0.00060, in excellent agreement with the space shuttle experimental value α=-0.01285±0.00038.
- Received 4 December 1998
- Revised 7 June 1999
- Published 9 September 1999
© 1999 The American Physical Society