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HK: Physik der Hadronen und Kerne

HK 23: Nuclear Structure/Spectroscopy IV

HK 23.5: Vortrag

Mittwoch, 10. März 2004, 12:00–12:15, A

The concept of “specific heat” for nuclei — •S. Heinze¹, P. Cejnar², and J. Jolie¹ — ¹Institut für Kernphysik, Universität zu Köln — ²Institut of Particle and Nuclear Physics, Charles University

We study quantum phase transitions between nuclear ground-state shapes using a simple Interacting sd-Boson Model hamiltionian. In our previous work an analog of “specific heat” for quantum systems was introduced in several alternative ways showing the similarity to phase transitions in classical thermodynamics [1]. Now we introduce a new microscopic way to calculate the “specific heat”. hamiltonian. It is based on a connection of the thermodynamic partition function with the discriminant of the quantum characteristic polynomial. The results based on the new definition are compared to the older ones. This work was supported by the DFG under grant # 436TSE1716103

[1] P. Cejnar, S. Heinze, J. Jolie, Phys. Rew. C 68 (2003) 034326.