activity
20122025
most citedOpen Quantum Random Walks and Quantum Markov chains on Trees I: Phase transitions

15 citations · 37 across the 19 of their papers we have counts for

collaborators

21 papers

math.PR2025

Finite free probability and transforms of Jacobi processes

Nizar Demni, Nicolas Gilliers, Tarek Hamdi

We calculate the averaged characteristic polynomial and its finite transform for the Hermitian Jacobi process at any fixed time . We give a direct proof that this sequence…

math.PR2025

Spectral distribution of the free Jacobi process with equal rank projections

Nizar Demni, Tarek Hamdi

The free Jacobi process is the radial part of the compression of the free unitary Brownian motion by two free orthogonal projections in a non commutative probability space. In this…

math-ph2024

Quantum Mechanics of Arc-Sine and Semi-Circle Distributions: A Unified Approach

Luigi Accardi, Tarek Hamdi, Yun Gang Lu

This paper continues the program of applying beyond physics the technique of \textbf{probabilistic quantization} and extending to the quantum mechanics associated with the arc--sin…

math.PR2024

Moments of the free Jacobi process: a matrix approach

Nizar Demni, Tarek Hamdi

We compute the large size limit of the moment formula derived in \cite{DHS} for the Hermitian Jacobi process at fixed time. Our computations rely on the polynomial division algorit…

math.PR2022

Summing free unitary Brownian motions with applications to quantum information

Nizar Demni, Tarek Hamdi

Motivated by quantum information theory, we introduce a dynamical random state built out of the sum of independent unitary Brownian motions. In the large size limit, its…

math-ph2022★ 1 cited

Open Quantum Random Walks and Quantum Markov chains on Trees II: The recurrence

Farrukh Mukhamedov, Abdessatar Souissi, Tarek Hamdi +1

In the present paper, we construct QMC (Quantum Markov Chains) associated with Open Quantum Random Walks such that the transition operator of the chain is defined by OQRW and the r…

math-ph2022★ 15 cited

Open Quantum Random Walks and Quantum Markov chains on Trees I: Phase transitions

Farrukh Mukhamedov, Abdessatar Souissi, Tarek Hamdi

In the present paper, we construct QMC (Quantum Markov Chains) associated with Open Quantum Random Walks such that the transition operator of the chain is defined by OQRW and the r…

math.PR2022

Relating moments of self-adjoint polynomials in two orthogonal projections

Nizar Demni, Tarek Hamdi

Given two orthogonal projections in a non commutative tracial probability space, we prove relations between the moments of , of and of and…

math.OA2021★ 3 cited

The quantum mechanics canonically associated to free probability Part I: Free momentum and associated kinetic energy

Luigi Accardi, Tarek Hamdi, Yun Gang Lu

After a short review of the quantum mechanics canonically associated with a classical real valued random variable with all moments, we begin to study the quantum mechanics canonica…

math-ph2021★ 7 cited

Quantum Markov Chains on the Comb graphs: Ising model

Farrukh Mukhamedov, Abdessatar Souissi, Tarek Hamdi

In the present paper, we construct quantum Markov chains (QMC) over the Comb graphs. As an application of this construction, it is proved the existence of the disordered phase for…

math.PR2020

The Hermitian Jacobi process: simplified formula for the moments and application to optical fibers MIMO channels

Nizar Demni, Tarek Hamdi, Abdessatar Souissi

Using a change of basis in the algebra of symmetric functions, we compute the moments of the Hermitian Jacobi process. After a careful arrangement of the terms and the evaluation o…

math.SP2020

Support of the Brown measure of the product of a free unitary Brownian motion by a free self-adjoint projection

Nizar Demni, Tarek Hamdi

The first part of this paper is devoted to the Brown measure of the product of the free unitary Brownian motion by an arbitrary free non negative operator. Our approach follows the…

math.OA2020

On star-Moments of the compression of the free unitary Brownian motion by a free projection

Nizar Demni, Tarek Hamdi

In this paper, we derive explicit expressions for the moments and for the mixed moments of the compression of a free unitary Brownian motion by a free projection. While the moments…

math.PR2019

Schur-Weyl duality and the Product of randomly-rotated symmetries by a unitary Brownian motion

Nizar Demni, Tarek Hamdi

In this paper, we introduce and study a unitary matrix-valued process which is closely related to the Hermitian matrix-Jacobi process. It is precisely defined as the product of a d…

math.PR2017

Spectral distribution of the free Jacobi process, revisited

Tarek Hamdi

We obtain a description for the spectral distribution of the free Jacobi process for any initial pair of projections. This result relies on a study of the unitary operator $RU_tSU_…

math.PR2017

Free mutual information for two projections

Tarek Hamdi

The present paper provides a proof of for two projections without any extra assumptions. An an…

math.PR2017★ 4 cited

Liberation, free mutual information and orbital free entropy

Tarek Hamdi

We present here some connections between the liberation process for projections and its counterpart for symmetries when the…

math.PR2016★ 1 cited

Inverse of the flow and moments of the free Jacobi process associated with a single projection

Nizar Demni, Tarek Hamdi

This paper is a companion to a series of papers devoted to the study of the spectral distribution of the free Jacobi process associated with a single projection. Actually, we notic…

math.PR2014★ 3 cited

Monotone and boolean unitary Brownian motions

Tarek Hamdi

The additive monotone (resp. boolean) unitary Brownian motion is a non-commutative stochastic process with monotone (resp. boolean) independent and stationary increments which are…

math.CA2013

Spectral distribution of large-size Brownian motions on the complex linear group

Nizar Demni, Tarek Hamdi

We show how the approach used in `N. Demni, T. Hmidi. Spectral Distribution of the Free unitary Brownian motion: another approach. Sem. Probab. XLIV. 2012. 191-206.' applies to des…

math.PR2012★ 3 cited

Stochastic analysis for obtuse random walks

Uwe Franz, Tarek Hamdi

We present a construction of the basic operators of stochastic analysis (gradient and divergence) for a class of discrete-time normal martingales called obtuse random walks. The ap…