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View article: Observing quantum work by Margenau-Hill quasiprobability
Observing quantum work by Margenau-Hill quasiprobability Open
We consider Margenau-Hill quasiprobability that measures a statistical weight assigned to an observation of an energy eigenvalue pair and its utilization in assessing work done by isolated quantum ensembles that generally contain coherence…
View article: Shell game with a quantum pea
Shell game with a quantum pea Open
We examine the role of quantum measurement and coherence, considering the shell game with a quantum particle. The game consists of three sites arranged to form a ring geometry and a particle visiting the sites through a unitary evolution. …
View article: On the thermodynamic entropy in the microcanonical ensemble of classical systems
On the thermodynamic entropy in the microcanonical ensemble of classical systems Open
We demonstrate that the surface entropy given by the volume of an energy shell in the phase space can be the thermodynamically consistent entropy in a classical microcanonical ensemble if the thickness of the energy shell is not an arbitra…
View article: Target Searches of Interacting Brownian Particles
Target Searches of Interacting Brownian Particles Open
We study the target search of interacting Brownian particles in a finite domain, focusing on the effect of inter-particle interactions on the search time. We derive the integral equation for the mean first-passage time and acquire its solu…
View article: Entropies of the microcanonical ensemble
Entropies of the microcanonical ensemble Open
We revisit the Boltzmann entropy and the Gibbs entropy, two entropy definitions of the microcanonical ensemble, and discuss their respective weakness, incompatible with our traditional understanding of thermodynamic entropy. For the microc…
View article: Measurement-driven single temperature engine
Measurement-driven single temperature engine Open
A four stroke quantum engine which alternately interacts with a measurement\napparatus and a single heat bath is discussed in detail with respect to the\naverage work and heat as well as to the fluctuations of work and heat. The\nefficienc…
View article: Role of work in matter exchange between finite quantum systems
Role of work in matter exchange between finite quantum systems Open
Close to equilibrium, the exchange of particles and heat between macroscopic systems at different temperatures and different chemical potentials is known to be governed by a matrix of transport coefficients which is positive and symmetric.…
View article: Single-temperature quantum engine without feedback control
Single-temperature quantum engine without feedback control Open
A cyclically working quantum-mechanical engine that operates at a single temperature is proposed. Its energy input is delivered by a quantum measurement. The functioning of the engine does not require any feedback control. We analyze work,…
View article: High‐intensity focused ultrasound and laparoscopic myomectomy in the treatment of uterine fibroids: a comparative study
High‐intensity focused ultrasound and laparoscopic myomectomy in the treatment of uterine fibroids: a comparative study Open
Objective To compare the clinical efficacies of high‐intensity focused ultrasound ( HIFU ) and laparoscopic myomectomy ( LM ) in the treatment of uterine fibroids and their effects on patients’ quality of life. Design A non‐randomised cont…
View article: Hidden Criticality of Counterion Condensation Near a Charged Cylinder
Hidden Criticality of Counterion Condensation Near a Charged Cylinder Open
We study the condensation transition of counterions on a charged cylinder via Monte Carlo simulations. Varying the cylinder radius systematically in relation to the system size, we find that all counterions are bound to the cylinder and th…
View article: Transitional steady states of exchange dynamics between finite quantum systems
Transitional steady states of exchange dynamics between finite quantum systems Open
We examine energy and particle exchange between finite-sized quantum systems and find a new form of nonequilibrium state. The exchange rate undergoes stepwise evolution in time, and its magnitude and sign dramatically change according to s…