Abstract
Thermal fluctuations of the color superconducting order parameter in dense quark matter are investigated in terms of the phenomenological Ginzburg - Landau approach. Our estimates show that fluctuations of the di-quark gap may strongly affect some of thermodynamic quantities even far below and above the critical temperature. If the critical temperature
T
c
of the di-quark phase transition were rather high ($\gsim (50÷70)$ MeV) one could expect a manifestation of fluctuations of the di-quark gap in the course of heavy ion collisions (above
T
c
). For
T
c
∼50
MeV color superconducting fluctuations may also affect an initial stage of the hybrid star evolution.