10 citations · 35 across the 7 of their papers we have counts for
7 papers
Explicit derivation of the Fraunhofer diffraction formula for oblique incidence
Shyamal Biswas, Rhitabrata Bhattacharyya, Saugata Bhattacharyya
We have analytically explored the Rayleigh-Sommerfeld scalar diffraction for oblique incidence. We have explicitly derived the Fraunhofer diffraction formulae for oblique incidence…
Rayleigh-Sommerfeld scalar diffraction by apertures moving at relativistic speeds
Rhitabrata Bhattacharyya, Saugata Bhattacharyya, Shyamal Biswas
We have analytically obtained the theoretical results for the Rayleigh-Sommerfeld (R-S) scalar diffraction by apertures, such as single-slit, double-slit, grating and circular aper…
Energy fluctuation and discontinuity of specific heat
Shyamal Biswas, Joydip Mitra, Saugata Bhattacharyya
Specific heat per particle () of an ideal gas, in many occasions, is interpreted as energy fluctuation per particle () of the ideal gas through the relation: $\t…
Casimir effect for a Bose-Einstein condensate inside a cylindrical tube
Shyamal Biswas, Saugata Bhattacharyya, Amit Agarwal
We explore Casimir effect on an interacting Bose-Einstein condensate (BEC) inside a cylindrical tube. The Casimir force for the confined BEC comprises of (i) a mean-field part aris…
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 He film below and above the bulk point. We have explored the role of fluctuations around the mean field theory in a pertu…
Scaling Function for the Critical Specific Heat in a Confined Geometry : Spherical Limit
Saugata Bhattacharyya, J. K. Bhattacharjee
The scaling function for the critical specific heat is obtained exactly for temperatures above the bulk transition temperature by working in the spherical limit. Generalization of…
Critical Ultrasonics Near the Superfluid Transition : Finite Size Effects
Saugata Bhattacharyya, J. K. Bhattacharjee
The suppression of order parameter fluctuations at the boundaries causes the ultrasonic attenuation near the superfluid transition to be lowered below the bulk value. We calculate…