7 papers
Continuous time crystals as a PT symmetric state and the emergence of critical exceptional points
Yuma Nakanishi, Ryo Hanai, Tomohiro Sasamoto
Continuous time-translation symmetry is often spontaneously broken in open quantum systems, and the condition for their emergence has been actively investigated. However, there are…
Theory of Andreev and shot noise spectroscopy for topological superconductors probed by -wave superconducting tips
Jushin Tei, Ryo Hanai, Satoshi Fujimoto +1
Scanning tunneling microscopy (STM) and spectroscopy (STS) with -wave superconducting tips has been widely applied to probe exotic superconductors, but its potential for investi…
Generalized non-reciprocal phase transitions in multipopulation systems
Cheyne Weis, Ryo Hanai
Non-reciprocal interactions are prevalent in various complex systems leading to phenomena that cannot be described by traditional equilibrium statistical physics. Although non-reci…
Universal scaling in one-dimensional non-reciprocal matter
Shuoguang Liu, Peter B. Littlewood, Ryo Hanai
Unveiling universal non-equilibrium scaling laws has been a central theme in modern statistical physics, with recent attention increasingly directed toward non-equilibrium phases t…
Phase Transitions in Nonreciprocal Driven-Dissipative Condensates
Ron Belyansky, Cheyne Weis, Ryo Hanai +2
We investigate the influence of boundaries and spatial nonreciprocity on nonequilibrium driven-dissipative phase transitions. We focus on a one-dimensional lattice of nonlinear bos…
Photoinduced non-reciprocal magnetism
Ryo Hanai, Daiki Ootsuki, Rina Tazai
Out of equilibrium, the action-reaction symmetry of the interactions is often broken, leading to the emergence of various collective phenomena with no equilibrium counterparts. Alt…