158 citations · 1.3k across the 43 of their papers we have counts for
43 papers
Constrained integrability and anyonic chains
Matthew Blakeney, Luke Corcoran, Marius de Leeuw
We review the notion of Yang-Baxter integrability for spin chains that have Hilbert spaces with constraints, such as a Rydberg blockade. We focus on anyonic chains, whose constrain…
The quantum group structure of long-range integrable deformations
Koen Schouten, Marius de Leeuw
Quantum integrable spin chains are known to possess a large family of long-range deformations generated by the local, boost and bilocal operators. Although these deformations are w…
On deforming and breaking integrability
Ysla F. Adans, Marius de Leeuw, Tristan McLoughlin
In this paper we study nearest-neighbour deformations of integrable models. After expanding in the deformation parameter, we identify four possible types of deformations. First the…
An integrable deformed Landau-Lifshitz model with particle production?
Marius de Leeuw, Andrea Fontanella, Juan Miguel Nieto García
We discuss the continuum limit of a non-Hermitian deformation of the Heisenberg XXX spin chain. This model appeared in the classification of solutions of the Yang--Baxte…
All 4 x 4 solutions of the quantum Yang-Baxter equation
Marius de Leeuw, Vera Posch
In this paper, we complete the classification of 4 x 4 solutions of the Yang-Baxter equation. Regular solutions were recently classified and in this paper we find the remaining non…
Integrable Conformal Defects in N=4 SYM
Marius de Leeuw, Adolfo Holguin
In this paper we classify integrable conformal defects in N=4 SYM theory for which the scalar fields pick up a non-trivial vacuum expectation value. Defects of this form correspond…
Integrable models on Rydberg atom chains
Luke Corcoran, Marius de Leeuw, Balázs Pozsgay
We initiate a systematic study of integrable models for spin chains with constrained Hilbert spaces; we focus on spin-1/2 chains with the Rydberg constraint. We extend earlier resu…
A perturbative approach to the non-relativistic string spectrum
Marius de Leeuw, Andrea Fontanella, Juan Miguel Nieto García
In this letter we use a perturbative approach to find the spectrum of non-relativistic strings in the String Newton-Cartan (SNC) AdSS spacetime. We perturb the bosoni…
All regular solutions of the Yang-Baxter equation
Luke Corcoran, Marius de Leeuw
We complete the classification of regular solutions of the Yang-Baxter equation. Apart from previously known models, we find four new models of non-difference form. All…
Hidden quasi-local charges and Gibbs ensemble in a Lindblad system
Marius de Leeuw, Chiara Paletta, Balázs Pozsgay +1
We consider spin-1/2 chains with external driving that breaks the continuous symmetries of the Hamiltonian. We introduce a family of models described by the Lindblad equation with…
A range three elliptic deformation of the Hubbard model
Marius de Leeuw, Chiara Paletta, Balázs Pozsgay
In this paper we present a new integrable deformation of the Hubbard model. Our deformation gives rise to a range 3 interaction term in the Hamiltonian which does not preserve spin…
Flag Integrable Models and Generalized Graded Algebras
Marius de Leeuw, Rafael I. Nepomechie, Ana L. Retore
We introduce new classes of integrable models that exhibit a structure similar to that of flag vector spaces. We present their Hamiltonians, R-matrices and Bethe-ansatz solutions.…
The Bethe ansatz for a new integrable open quantum system
Marius de Leeuw, Chiara Paletta
In this paper we apply the nested algebraic Bethe ansatz to compute the eigenvalues and the Bethe equations of the transfer matrix of the new integrable Lindbladian found in [1]. W…
Lifting integrable models and long-range interactions
Marius de Leeuw, Ana. L. Retore
In this paper we discuss a constructive approach to check whether a constant Hamiltonian is Yang-Baxter integrable. We then apply our method to long-range interactions and find the…
Integrable deformations of AdS/CFT
Marius de Leeuw, Anton Pribytok, Ana L. Retore +1
In this paper we study in detail the deformations introduced in [1] of the integrable structures of the AdS integrable models. We do this by embedding the corresponding sca…
Asymptotic one-point functions in AdS/dCFT
Isak Buhl-Mortensen, Marius de Leeuw, Asger C. Ipsen +2
We take the first step in extending the integrability approach to one-point functions in AdS/dCFT to higher loop orders. More precisely, we argue that the formula encoding all tree…
A Quantum Check of AdS/dCFT
Isak Buhl-Mortensen, Marius de Leeuw, Asger C. Ipsen +2
We build the framework for performing loop computations in the defect version of N=4 super Yang-Mills theory which is dual to the probe D5-D3 brane system with background gauge-fie…
One-loop Wilson loops and the particle-interface potential in AdS/dCFT
Marius de Leeuw, Asger C. Ipsen, Charlotte Kristjansen +1
We initiate the calculation of quantum corrections to Wilson loops in a class of four-dimensional defect conformal field theories with vacuum expectation values based on N=4 super…
AdS/dCFT one-point functions of the SU(3) sector
Marius de Leeuw, Charlotte Kristjansen, Stefano Mori
We propose a closed formula for the tree-level one-point functions of non-protected operators belonging to an SU(3) sub-sector of the defect CFT dual to the D3-D5 probe brane syste…
One-loop one-point functions in gauge-gravity dualities with defects
Isak Buhl-Mortensen, Marius de Leeuw, Asger C. Ipsen +2
We initiate the calculation of loop corrections to correlation functions in 4D defect CFTs. More precisely, we consider N=4 SYM with a codimension-one defect separating two regions…
Maximally extended sl(2|2) as a quantum double
Niklas Beisert, Marius de Leeuw, Reimar Hecht
We derive the universal R-matrix of the quantum-deformed enveloping algebra of centrally extended sl(2|2) using Drinfeld's quantum double construction. We are led to enlarging the…
One-point Functions in AdS/dCFT from Matrix Product States
Isak Buhl-Mortensen, Marius de Leeuw, Charlotte Kristjansen +1
One-point functions of certain non-protected scalar operators in the defect CFT dual to the D3-D5 probe brane system with k units of world volume flux can be expressed as overlaps…
An algebraic approach to the Hubbard model
Marius de Leeuw, Vidas Regelskis
We study the algebraic structure of an integrable Hubbard-Shastry type lattice model associated with the centrally extended su(2|2) superalgebra. This superalgebra underlies Beiser…
One-point Functions in Defect CFT and Integrability
Marius de Leeuw, Charlotte Kristjansen, Konstantin Zarembo
We calculate planar tree level one-point functions of non-protected operators in the defect conformal field theory dual to the D3-D5 brane system with k units of the world volume f…