Quantum Lunch Location:
T-Division Conference Room, TA-3,
Building 123, Room 121
Quantum Institute: Visitor Schedule
The Quantum Lunch is regularly held on Thursdays in the Theoretical Division Conference Room, TA-3, Building 123, Room 121.
For more information, contact Diego Dalvit.
Thursday, October 16, 2008
12:30 PM to 2 PM
Speaker: Haitao Quan, T-DO
TOPIC: Microscopic Work Distribution of Small Systems in Quantum Isothermal
Processes and the Minimum Work Principle
For a two-level quantum mechanical system, we derive microscopically
the exact expression for the fluctuation of microscopic work in a multistep non-equilibrium process, and we
rigorously prove that in an isothermal process, the fluctuation is
vanishingly small, and the most probabilistic work is just equal to
the difference of the free energy. Our study demonstrates that the convergence of the
microscopic work in the isothermal process is due to the nature
of the isothermal process rather than the usual thermodynamic limit
condition. Our investigation justifies the validity of a ``minimum
work principle" formulation of the second law even for a small
system far from the thermodynamic limit.