Critical Casimir force in the superfluid phase: effect of fluctuations

Shyamal Biswas, J. K. Bhattacharjee, Himadri S. Samanta +2

We have considered the critical Casimir force on a ${}^4$He film below and above the bulk $\lambda$ point. We have explored the role of fluctuations around the mean field theory in a pertu…