Statut | Confirmé |
Série | NUC-THEO |
Domaines | nucl-th |
Date | Mercredi 6 Juin 2018 |
Heure | 11:30 |
Institut | IPN |
Salle | Bâtiment 100, Salle A015 |
Nom de l'orateur | Mizusaki |
Prenom de l'orateur | Takahiro |
Addresse email de l'orateur | |
Institution de l'orateur | Senshu University, Japan |
Titre | Pfaffian, Onishi formula and Wick's theorem |
Résumé | Since the pioneering work of Robledo [1], the Pfaffian has been extensively studied in nuclear physics. With the use of the Grassmann integrals, his work gives an excellent answer to the sign-problem in the overlap between HFB wave functions (Onishi formula [2] proposed in half a century ago). After Robledo's work, I have also studied some extensions [3] and applications. Here I will talk about the following topics: \begin{enumerate} \item Basics of Pfaffian and matrix elements of quantum many-body system \item Pfaffian and sign-problem of Onishi formula \begin{itemize} \item Pfaffian formula for overlap of HFB wave functions \item Origin of the sign-problem and liked cluster theorem \end{itemize} \item Pfaffian and Wick's theorem \end{enumerate} I will show some examples of Pfaffian in other fields of quantum many-body physics.\\ \newline [1] L.M. Robledo, Phys. Rev. C 79 (2009), 021302(R).\newline [2] N. Onishi, S. Yoshida, Nucl. Phys. 80 (1966) 367.\newline [3] M. Oi, T. Mizusaki, Phys. Lett. B 707 (2012) 305, T. Mizusaki, M. Oi, Phys. Lett. B 715 (2012) 219,T. Mizusaki, M. Oi, F. Chen, Y. Sun, Phys. Lett. B 725 (2013) 175, T.Mizusaki, M.Oi, N.Shimizu, Phys. Lett. B779 (2018) 237. |
Numéro de preprint arXiv | |
Commentaires | $ $ |
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