Relativistic thermostatistical analysis for a combined potential within spatially dependent mass scheme

ARDA A., Sedehi H. R., Sever R.

EUROPEAN PHYSICAL JOURNAL PLUS, cilt.137, sa.4, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 137 Sayı: 4
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1140/epjp/s13360-022-02632-8
  • Dergi Adı: EUROPEAN PHYSICAL JOURNAL PLUS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, INSPEC
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

We study some thermodynamical quantities solving the Klein-Gordon equation by using a potential combining Coulomb, and Woods-Saxon potentials for a particular spatially dependent mass form. We find the energy eigenvalues, and the corresponding wave functions approximately by reforming the Klein-Gordon equation similar to a Riemann-type equation whose solutions are given in terms of hypergeometric function (2)F1(p', q'; r'; z). After obtaining them analytically, we get the partition function which is based on studying the thermostatistical quantities such as specific heat and Tsallis entropy. As a function of temperature, the specific heat shows a maximum structure which is the well-known Schottky anomaly at very low temperature. Tsallis entropy enhances with increasing the temperature for different surface thickness and width of the potential.