The finite temperature field theory for condensed matter physics, based on the kernel of the evolution equation, was recently proposed. The field theory is scale-free formalism, so it denies the absolute scale of thermodynamic temperature and uses dimensionless thermal variables, which are defined by the group velocities of sound and the interatomic distances, combined with the defining constants of the New SI. The universal thermal functional is obtained and used to derive the specific heat of condensed matter. The field theory of specific heat predicts the fourth power of temperature at sufficiently low temperature instead of the Debye theory’s cubic law. Experimental data for various condensed matter systems, including diamond lattice crystals, glasses and even solid helium-4, confirm the quartic law. The range of temperature with the fourth order behaviour varies, so it is called the quasi-low temperature regime specified by the characteristic temperature and the dimensionless constant. The critique of the Debye theory of specific heat is given.

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2018-12-13T14:00:002018-12-13T15:00:00CM Seminar: The field theory of specific heatEvent Information:
The finite temperature field theory for condensed matter physics, based on the kernel of the evolution equation, was recently proposed. The field theory is scale-free formalism, so it denies the absolute scale of thermodynamic temperature and uses dimensionless thermal variables, which are defined by the group velocities of sound and the interatomic distances, combined with the defining constants of the New SI. The universal thermal functional is obtained and used to derive the specific heat of condensed matter. The field theory of specific heat predicts the fourth power of temperature at sufficiently low temperature instead of the Debye theory’s cubic law. Experimental data for various condensed matter systems, including diamond lattice crystals, glasses and even solid helium-4, confirm the quartic law. The range of temperature with the fourth order behaviour varies, so it is called the quasi-low temperature regime specified by the characteristic temperature and the dimensionless constant. The critique of the Debye theory of specific heat is given.Event Location:
BRIM 311
Stewart Blusson Quantum Matter Institute
2355 East Mall
Vancouver BC
V6T 1Z4