We obtain exact analytic expressions of real tensor eigenvalue/vector distributions of real symmetric order-three tensors with Gaussian distributions for N ≤ 8. This is achieved by explicitly computing the partition function of a zero-dimensional boson–fermion system with four interactions. The distributions are expressed by combinations of polynomial, exponential, and error functions as results of feasible complicated bosonic integrals that appear after fermionic integrations. By extrapolating the expressions and also using a previous result, we guess a large-N expression. The expressions are compared with Monte Carlo simulations, and precise agreement and good agreement are obtained with the exact and the large-N expressions, respectively. Understanding the feasibility of the integration is left for future study, which would provide a general-N analytic formula.
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6 June 2023
Research Article|
June 01 2023
Exact analytic expressions of real tensor eigenvalue distributions of Gaussian tensor model for small N
Naoki Sasakura
Naoki Sasakura
a)
(Conceptualization)
CGPQI, Yukawa Institute for Theoretical Physics, Kyoto University
, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
a)Author to whom correspondence should be addressed: sasakura@yukawa.kyoto-u.ac.jp
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a)Author to whom correspondence should be addressed: sasakura@yukawa.kyoto-u.ac.jp
J. Math. Phys. 64, 063501 (2023)
Article history
Received:
November 06 2022
Accepted:
May 16 2023
Citation
Naoki Sasakura; Exact analytic expressions of real tensor eigenvalue distributions of Gaussian tensor model for small N. J. Math. Phys. 6 June 2023; 64 (6): 063501. https://doi.org/10.1063/5.0133874
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