Year: 2022
Type: preprint
Abstract: Quantum coherence associated with the superpositions of two different sets of eigenbasis vectors has been regarded as essential in thermodynamics. It is found that coherent factors can be determined by writing observables as an expansion in the basis vectors of the systemic density operator and Hamiltonian. We reveal the roles of coherence in finite-time thermodynamic processes, such as the spin precession and the spontaneous emission of a photon. Results show that the work in the spin precession and the heat in the spontaneous emission process are mainly generated by coherence.
Source: arXiv (Cornell University)
Authors: Chen, Jingyi, Su, Guozhen, Chen, Jincan, Su, Shanhe
Institution: Xiamen University
Language: English
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Award: G5789109057
OpenAlex ID: W4221165340