Banca de DEFESA: ALINNE MELISSA RODRIGUES DE OLIVEIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ALINNE MELISSA RODRIGUES DE OLIVEIRA
DATE: 30/09/2026
TIME: 09:00
LOCAL: Auditório da Biblioteca
TITLE:

Quantum Caloric Effects of Power-Law Potentials: A Thermodynamic Characterization

KEY WORDS:

Quantum Caloric Effects, Quantum Thermodynamics, Power-Law Potentials, Quantum Harmonic Oscillator, Spin Systems.

PAGES: 60
BIG AREA: Ciências Exatas e da Terra
AREA: Física
SUBÁREA: Física da Matéria Condensada
SPECIALTY: Propriedades Térmicas da Matéria Condensada
SUMMARY:

The recent Quantum Caloric Effect (QCE) bridges the gap between classical and quantum thermodynamics, providing novel insights into heat-exchange processes at the quantum level. In this work, we introduce the application of the QCE to quantum systems characterized by generalized power-law potentials, which include the infinite square well and the quantum harmonic oscillator as limiting cases. By examining these paradigmatic models, we elucidate how discrete energy spectra critically influence caloric responses, revealing fundamental distinctions compared to their classical counterparts. In particular, we derive analytical expressions for the isothermal entropy change ($\Delta S_{iso}$) and the adiabatic temperature variation ($\Delta T_{ad}$) for the Quantum Harmonic Oscillator and the Infinite Square Well. We extend this analysis to the generalized power-law potential, incorporating the semiclassical approximation of canonical entropy. Finally, we outline perspectives for applying this framework to multi-spin systems, such as dimers and trimers, aiming to characterize the intrinsic caloric potential of quantum materials and their implications for quantum thermal machines.

COMMITTEE MEMBERS:
Interno - 3067463 - CLEBSON DOS SANTOS CRUZ
Interno - 1088864 - ELIAS BRITO ALVES JUNIOR
Externo à Instituição - MARON FREITAS ANKA