Zobrazeno 1 - 10
of 136
pro vyhledávání: '"Samary, Dine Ousmane"'
Financial stock return correlations have been analyzed through the lens of random matrix theory to differentiate the underlying signal from spurious correlations. The continuous spectrum of the eigenvalue distribution derived from the stock return co
Externí odkaz:
http://arxiv.org/abs/2409.19711
This paper examines the quantum $(2+p)$-spin dynamics of a $N$-vector $\textbf{x}\in \mathbb{R}^N$ through the lens of renormalization group (RG) theory. The RG is based on a coarse-graining over the eigenvalues of matrix-like disorder, viewed as an
Externí odkaz:
http://arxiv.org/abs/2408.02602
Autor:
Lahoche, Vincent, Samary, Dine Ousmane
Publikováno v:
Nucl. Phys. B 1006 (2024) 116656
This paper is the last of the series investigating renormalization group aspects of stochastic random matrices, including a Wigner-like disorder. We consider the equilibrium dynamics formalism that can be merged with the Ward identities arising from
Externí odkaz:
http://arxiv.org/abs/2404.11915
Autor:
Lahoche, Vincent, Samary, Dine Ousmane
Publikováno v:
Physics Letters A 525 (2024) 129906
This paper aims to establish a connection between Pisarski's fixed point and a (2+3)-spin-glass model with sextic confinement potential. This is made possible by the unconventional power-counting induced by the effective kinetics provided by the diso
Externí odkaz:
http://arxiv.org/abs/2404.05436
Autor:
Lahoche, Vincent, Samary, Dine Ousmane
Publikováno v:
Nucl. Phys. B 1006 (2024) 116627
This paper, as a continuation of our previous investigation [arXiv:2403.07577] aims to study the glassy random matrices with quenched Wigner disorder. In this previous work, we have constructed a renormalization group based on the effective determini
Externí odkaz:
http://arxiv.org/abs/2403.12217
Autor:
Lahoche, Vincent, Samary, Dine Ousmane
Publikováno v:
Nucl. Phys. B 1005 (2024) 116582
In this paper, we study the equilibrium states of a $N\times N$ stochastic complex random matrix $M$, whose entries evolve in time accordingly with a Langevin equation including both Gaussian white noises and a linear disorder, materialized by the Wi
Externí odkaz:
http://arxiv.org/abs/2403.07577
Publikováno v:
Chaos, Solitons and Fractals 183 (2024) 114919
The construction of fractional derivatives with the right properties for use in field theory is reputed to be a difficult task, essentially because of the absence of a unique definition and uniform properties. The conformable fractional derivative in
Externí odkaz:
http://arxiv.org/abs/2401.15776
Autor:
Erbin, Harold, Finotello, Riccardo, Kpera, Bio Wahabou, Lahoche, Vincent, Samary, Dine Ousmane
Publikováno v:
J. Stat. Mech. (2024) 083203
Signal detection is one of the main challenges of data science. As it often happens in data analysis, the signal in the data may be corrupted by noise. There is a wide range of techniques aimed at extracting the relevant degrees of freedom from data.
Externí odkaz:
http://arxiv.org/abs/2310.07499
The Ward-Takahashi identities are considered as the generalization of the Noether currents available to quantum field theory and include quantum fluctuation effects. Usually, they take the form of relations between correlation functions, which ultima
Externí odkaz:
http://arxiv.org/abs/2307.12446
Publikováno v:
Nuclear Physics B 991 (2023) 116188
The probability laws associated with random tensors or tensor field theories are traditionally equilibrium distributions. In this paper, we consider a stochastic point of view, and approach the quantization by a Langevin type equation. We especially
Externí odkaz:
http://arxiv.org/abs/2302.02892