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92 papers · 1 filter
Nambu Dynamics and Hydrodynamics of Granular Material
Akio Sugamoto, Kazuharu Bamba, Tetuya Kawamura +3
On the basis of the intimate relation between Nambu dynamics and the hydrodynamics, the hydrodynamics on a non-commutative space (obtained by the quantization of space), proposed b…
Cosmological Perturbations in Palatini Formalism
Mio Kubota, Kin-ya Oda, Keigo Shimada +1
We investigate cosmological perturbations of scalar-tensor theories in Palatini formalism. First we introduce an action where the Ricci scalar is conformally coupled to a function…
Beyond Squeezing à la Virasoro Algebra
So Katagiri, Akio Sugamoto, Koichiro Yamaguchi +1
The generalization of squeezing is realized in terms of the Virasoro algebra. The higher-order squeezing can be introduced through the higher-order time-dependent potential, in whi…
Bogomol'nyi Equations for Vortices in Born-Infeld-Higgs Systems
Kiyoshi Shiraishi, Satoru Hirenzaki
We study vortex solutions in the Born-Infeld theory coupled with a complex scalar field. We show that for a specific form of the "Higgs" potential the vortex satisfies a set of Bog…
Gravity Analog Model of Non-equilibrium Thermodynamics
Noriaki Aibara, Naoaki Fujimoto, So Katagiri +4
Non-equilibrium thermodynamics of Onsager and Machlup and of Hashitsume is reformulated as a gravity analog model, in which thermodynamic variables, kinetic coefficients and genera…
Vacuum energy for Yang-Mills fields in : One-loop, two-loop, and beyond
Kiyoshi Shiraishi, Satoru Hirenzaki
The vacuum energy is calculated for Yang-Mills (YM) system defined in dimensional space-time of (), where the possibility of the YM fields to acquire the…