65 citations · 648 across the 58 of their papers we have counts for
42 papers · 1 filter
Relational background field formulation of discrete quantum gravity models: The case of vector models in zero dimensions
Vincent Lahoche, Dine Ousmane Samary, Parham Radpay
In a recent paper arxiv.org/abs/2609.21031, we have introduced the concept of a relational background field as a new approach to the renormalization group (RG) for discrete quantum…
Functional Renormalization Group for a Rank-4 Renormalizable Tensorial Group Field Theory with Derivative Necklace Couplings
Seke Fawaaz Zime Yerima, Vincent Lahoche, Dine Ousmane Samary
We apply the functional renormalization group to an Abelian Group Field Theory extended beyond the branched-polymer (melonic) sector by including interactions that are subdominant…
Stochastic dynamics for group field theories II: Methods for nonequilibrium renormalization group
Vincent Lahoche, Dine Ousmane Samary
This paper is a continuation of our earlier work, which aimed to develop methods for understanding the renormalization group of tensorial group field theories within the stochastic…
Functional renormalization group for p=2 like glassy matrices in the planar approximation: III. Equilibrium dynamics and beyond
Vincent Lahoche, Dine Ousmane Samary
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 dynami…
Functional renormalization group for like glassy matrices in the planar approximation: II. Ward identities method in the deep IR
Vincent Lahoche, Dine Ousmane Samary
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 hav…
Functional renormalization group for p=2 like glassy matrices in the planar approximation: I. Vertex expansion at equilibrium
Vincent Lahoche, Dine Ousmane Samary
In this paper, we study the equilibrium states of a stochastic complex random matrix , whose entries evolve in time accordingly with a Langevin equation including bo…
Functional renormalization group for signal detection and stochastic ergodicity breaking
Harold Erbin, Riccardo Finotello, Bio Wahabou Kpera +2
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 tec…
Gravitational action for a massive Majorana fermion in 2d quantum gravity
Corinne de Lacroix, Harold Erbin, Vincent Lahoche
We compute the gravitational action of a free massive Majorana fermion coupled to two-dimensional gravity on compact Riemann surfaces of arbitrary genus. The structure is similar t…
Anomalous higher order Ward identities in tensorial group field theories without closure constraint
Bio Wahabou Kpera, Vincent Lahoche, Dine Ousmane Samary +1
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…
Stochastic melonic kinetics with random initial conditions
Bio Wahabou Kpera, Vincent Lahoche, Dine Ousmane Samary
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…
Functional renormalization group for multilinear disordered Langevin dynamics II: Revisiting the spin dynamics for Wigner and Wishart ensembles
Vincent Lahoche, Dine Ousmane Samary, Mohamed Tamaazousti
In this paper, we investigate the large-time behavior for a slightly modified version of the standard p=2 soft spins dynamics model, including a quartic or higher potential. The eq…
Renormalization in the neural network-quantum field theory correspondence
Harold Erbin, Vincent Lahoche, Dine Ousmane Samary
A statistical ensemble of neural networks can be described in terms of a quantum field theory (NN-QFT correspondence). The infinite-width limit is mapped to a free field theory, wh…
Low temperature dynamics for confined soft spin in the quenched regime
Vincent Lahoche, Dine Ousmane Samary
This paper aims to address the low-temperature dynamics issue for the spin dynamics with confining potential, focusing especially on quartic and sextic cases. The dynamics ar…
Functional Renormalization Group Approach for Signal Detection
Vincent Lahoche, Dine Ousmane Samary, Mohamed Tamaazousti
This review paper uses renormalization group techniques for signal detection in nearly-continuous positive spectra. We highlight universal aspects of the analogue field-theory appr…
No Ward-Takahashi identity violation for an Abelian tensorial group field theories with closure constraint
Vincent Lahoche, Bêm-Biéri Barthélémy Natta, Dine Ousmane Samary
This paper aims at investigating the nonperturbative functional renormalization group for tensorial group field theories with nontrivial kinetic action and closure constraint. We c…
Nonperturbative renormalization for the neural network-QFT correspondence
Harold Erbin, Vincent Lahoche, Dine Ousmane Samary
In a recent work arXiv:2008.08601, Halverson, Maiti and Stoner proposed a description of neural networks in terms of a Wilsonian effective field theory. The infinite-width limit is…
Functional renormalization group for multilinear disordered Langevin dynamics I: Formalism and first numerical investigations at equilibrium
Vincent Lahoche, Dine Ousmane Samary, Mohamed Ouerfelli
This paper aims at using the functional renormalization group formalism to study the equilibrium states of a stochastic process described by a quench--disordered multilinear Langev…
Field theoretical approach for signal detection in nearly continuous positive spectra II: Tensorial data
Vincent Lahoche, Mohamed Ouerfelli, Dine Ousmane Samary +1
The tensorial principal component analysis is a generalization of ordinary principal component analysis, focusing on data which are suitably described by tensors rather than matric…
Signal detection in nearly continuous spectra and symmetry breaking
Vincent Lahoche, Dine Ousmane Samary, Mohamed Tamaazousti
The large scale behavior of systems having a large number of interacting degrees of freedom is suitably described using renormalization group, from non-Gaussian distributions. Reno…
Field theoretical approach for signal detection in nearly continuous positive spectra I: Matricial data
Vincent Lahoche, Dine Ousmane Samary, Mohamed Tamaazousti
Renormalization group techniques are widely used in modern physics to describe the low energy relevant aspects of systems involving a large number of degrees of freedom. Those tech…
Reliability of the local truncations for the random tensor models renormalization group flow
Vincent Lahoche, Dine Ousmane Samary
The standard nonperturbative approaches of renormalization group for tensor models are generally focused on a purely local potential approximation (i.e. involving only generalized…
Generalized scale behavior and renormalization group for data analysis
Vincent Lahoche, Dine Ousmane Samary, Mohamed Tamaazousti
Some recent results showed that renormalization group can be considered as a promising framework to address open issues in data analysis. In this work, we focus on one of these asp…
Flowing in discrete gravity models and Ward identities: A review
Ezinvi Baloitcha, Vincent Lahoche, Dine Ousmane Samary
Ward-Takahashi identities are nonperturbative relations between correlation functions and arising from symmetries in quantum and statistical fields theories, as Noether currents co…
Pedagogical comments about nonperturbative Ward-constrained melonic renormalization group flow
Vincent Lahoche, Dine Ousmane Samary
This paper, in addition to our recent works, intends to explore the behavior of the Wetterich flow equations in the portion of the theory space spanned by non-branching melons cons…