Zobrazeno 1 - 10 of 33 pro vyhledávání: '"Shuta Nakajima"'
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Akademický článek
Designing nontrivial one-dimensional Floquet topological phases using a spin-1/2 double-kicked rotor
Autor: Yusuke Koyama, Kazuya Fujimoto, Shuta Nakajima, Yuki Kawaguchi
Publikováno v: Physical Review Research, Vol 5, Iss 4, p 043167 (2023)
A quantum kicked rotor model is one of the promising systems to realize various Floquet topological phases. We consider a double-kicked rotor model for a one-dimensional quasi-spin-1/2 Bose-Einstein condensate with spin-dependent and spin-independent
Externí odkaz: https://doaj.org/article/7f27bbc20c2744c9a98ef045f4c51523
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4
Competition and interplay between topology and quasi-periodic disorder in Thouless pumping of ultracold atoms
Autor: Yoshiro Takahashi, Yoshihito Kuno, Pasquale Marra, Nobuyuki Takei, Shuta Nakajima, Keita Sakuma
Publikováno v: Nature Physics. 17:844-849
Robustness against perturbations lies at the heart of topological phenomena. If, however, a perturbation such as disorder becomes dominant, it may cause a topological phase transition between topologically non-trivial and trivial phases. Here we expe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd755ed1fe5af792841182d950a839e4
https://doi.org/10.1038/s41567-021-01229-9
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6
Gaussian fluctuations for the directed polymer partition function in dimension d≥3 and in the whole L2-region
Autor: Shuta Nakajima, Clément Cosco
Publikováno v: Annales de l'Institut Henri Poincaré, Probabilités et Statistiques. 57
We consider the discrete directed polymer model with i.i.d. environment and we study the fluctuations of the tail n(d−2)/4(W∞−Wn) of the normalized partition function. It was proven by Comets and Liu (J. Math. Anal. Appl. 455 (2017) 312–335),
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fc6a70bd6ca01fde1c81e3f62efbf675
https://doi.org/10.1214/20-aihp1100
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Triviality of the geometry of mixed $p$-spin spherical Hamiltonians with external field
Autor: David Belius, Jiří Černý, Shuta Nakajima, Marius A. Schmidt
We study isotropic Gaussian random fields on the high-dimensional sphere with an added deterministic linear term, also known as mixed p-spin Hamiltonians with external field. We prove that if the external field is sufficiently strong, then the result
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb4ff842873807235f35c790ea577a21
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9
Divergence of shape fluctuation for general distributions in first-passage percolation
Autor: Shuta Nakajima
Publikováno v: Ann. Inst. H. Poincaré Probab. Statist. 56, no. 2 (2020), 782-791
Nous etudions les fluctuations de la forme limite pour la percolation de premier passage dans $\mathbb{Z}^{d}$. Il est connu que ces fluctuations divergent dans le cas des lois de Bernoulli [Zhang (Probab. Theory. Related. Fields. 136 (2006) 298–32
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd6e4c9f2e6af1443d4d5b0d8eba095c
https://doi.org/10.1214/19-aihp982
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10
On Properties of Optimal Paths in First-Passage Percolation
Autor: Shuta Nakajima
Publikováno v: Journal of Statistical Physics. 174:259-275
In this paper, we study some properties of optimal paths in the first passage percolation on $$\mathbb {Z}^d$$ and show the following: (i) the number of optimal paths has an exponentially growth if the distribution has an atom; (ii) the means of inte
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a02ddd2f1f8fa5d9ab2707192a3751d1
https://doi.org/10.1007/s10955-018-2179-6
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