65 citations · 648 across the 58 of their papers we have counts for
58 papers
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…
Inferring the microscopic mechanisms of opinion dynamics using a kinetic Ising model
Ixandra Achitouv, David Chavalarias, Vincent Lahoche
Kinetic Ising models are widely used to describe binary opinion dynamics, but their microscopic validity has rarely been tested empirically. Here, we infer the transition probabili…
Functional Renormalization for Random Matrix Theory: The relational background field method
Vincent Lahoche, Dine Ousmane Samary
The construction of a reliable renormalization group (RG) flow for discrete gravity models that preserves their underlying symmetry group, typically or , remains an op…
Data Field Theory: Theory and Applications of the Functional Renormalization Group for Signal Detection
Riccardo Finotello, Vincent Lahoche, Dine Ousmane Samary +1
We review the renormalization group framework for signal detection in high-dimensional data, tailored to the regime where the signal may be of extensive rank and does not separate…
Field Theory of Data: Anomaly Detection via the Functional Renormalization Group. The 2D Ising Model as a Benchmark
Riccardo Finotello, Vincent Lahoche, Parham Radpay +1
We establish a correspondence between anomaly detection in high-noise regimes and the renormalization group flow of non-equilibrium field theories. We provide a physical grounding…
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 for Signal Detection: Dimensional Analysis and Dimensional Phase Transition for Nearly Continuous Spectra Effective Field Theory
Riccardo Finotello, Vincent Lahoche, Dine Ousmane Samary
Signal detection in high dimensions is a critical challenge in data science. While standard methods based on random matrix theory provide sharp detection thresholds for finite-rank…
Constructing the low-temperature phase diagram for the -quantum spin glass using the nonperturbative renormalization group
Ixandra Achitouv, Vincent Lahoche, Dine Ousmane Samary +1
In this paper, we use a nonperturbative renormalization group approach to construct the dynamical phase space of a quantum spin glass in the large limit. The disordered Hamilto…
The quantum -spin renormalization group in the large limit as a benchmark for functional renormalization group
Vincent Lahoche, Dine Ousmane Samary, Parham Radpay
To gain a deeper understanding of the glassy phase in -spin quantum models, this paper examines the dynamics of the -vector through the framework of…
Time-translation invariance symmetry breaking hidden by finite-scale singularities
Ixandra Achitouv, Vincent Lahoche, Dine Ousmane Samary +1
In this paper, we consider a renormalization group perspective on the quantum dynamics of a particle moving in the Euclidean space through the complex landscape prov…
Large time effective kinetics -functions for quantum (2 + p)-spin glass II: Effective vertex expansion, local potential approximation and symmetries
Bêm-Biéri Barthélémy Natta, Vincent Lahoche, Dine Ousmane Samary +1
This paper aims to study the functional renormalization group for quantum -spin dynamics of a -vector . By fixing the gauge symmetry in the co…
Signal inference in financial stock return correlations through phase-ordering kinetics in the quenched regime
Ixandra Achitouv, Vincent Lahoche, Dine Ousmane Samary
Financial stock return correlations have been analyzed through the lens of random matrix theory to differentiate the underlying signal from spurious correlations. The continuous sp…
Large time effective kinetics -functions for quantum (2+p)-spin glass
Vincent Lahoche, Dine Ousmane Samary, Parham Radpay
This paper examines the quantum -spin dynamics of a -vector through the lens of renormalization group (RG) theory. The RG is based on a coars…
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…
An intriguing connection between Pisarski's fixed point and (2+3)-spin glasses
Vincent Lahoche, Dine Ousmane Samary
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…
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…
Noether's currents for conformable fractional scalar field theories
Jean-Paul Anagonou, Vincent Lahoche, Dine Ousmane Samary
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 defin…
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…