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100 papers · 1 filter
Aging of glass-forming materials following a temperature jump
Ayata Ueno, Tomoko Mizuguchi, Takashi Odagaki
Physical aging is one of the non-equilibrium phenomena where physical properties change over time due to structural relaxation. Aging in spin glass systems has been explained by a…
Discrete time crystals detected by time-translation twist
Ryota Nakai, Taozhi Guo, Shinsei Ryu
We introduce a boundary condition twisted by time translation as a novel probe to characterize dynamical phases in periodically driven (Floquet) quantum systems. Inspired by twiste…
Weighted Point Configurations with Hyperuniformity: An Ecological Example and Models
Ayana Ezoe, Makoto Katori, Tomoyuki Shirai
Random point configurations are said to be in hyperuniform states, if density fluctuations are anomalously suppressed in large-scale. Typical examples are found in Coulomb gas syst…
A multicritical point of XXZ chain with single ion anisotropy
Shuichi Shiraishi, Kiyohide Nomura
We research the ground state of the XXZ spin chain with single ion anisotropy, focusing on XY1, XY2 (Spin Nematic), Neel, Haldane phases. Recently, it was reported that the…
Twisted-Boundary-Condition Formalism for Thermal Transport and an Application to the One-Dimensional XY Spin Chain
Ryota Nakai, Taozhi Guo, Shinsei Ryu
We introduce and formulate the boundary condition twisted by the energy (time translation) in one-dimensional quantum many-body systems. The stiffness against this boundary conditi…
Transition between the stick and slip states in a simplified model of magnetic friction
Hisato Komatsu
We introduce a simplified model of magnetic friction, and investigate its behavior using both numerical and analytical methods. When resistance coefficient is large, the moveme…