Results 101 to 110 of about 1,334 (305)

An integrable lattice version of the resonant level model

Nuclear Physics B, 1985
Abstract We introduce an exactly solvable discretisation of the resonant level model. Using the Bethe ansatz technique we prove its equivalence to the anisotropic U(1)-symmetric s-d exchange model, which was known previously only in the long-time approximation.
M.F. Weiss, K.D. Schotte
openaire   +1 more source

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

Advanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang, Aparajita Pramanik, Sandipan Sen, Shubhashis Dixit, Marcel Muench, R. J. Vikram, Daniel Schliephake, Yolita M. Eggeler, Ankur Chauhan, Martin Heilmaier, Alexander Kauffmann   +10 more
wiley   +1 more source

Exact finite volume expectation values of Ψ ¯ Ψ $$ \overline{\varPsi}\varPsi $$ in the massive Thirring model from light-cone lattice correlators

Journal of High Energy Physics, 2018
In this paper, using the light-cone lattice regularization, we compute the finite volume expectation values of the composite operator Ψ ¯ Ψ $$ \overline{\varPsi}\varPsi $$ between pure fermion states in the Massive Thirring Model.
Árpád Hegedűs
doaj   +1 more source

Integrable light-cone lattice discretizations from the universal $\mathrm{R}$-matrix [PDF]

, 2017
Our goal is to develop a more general scheme for constructing integrable lattice regularisations of integrable quantum field theories. Considering the affine Toda theories as examples, we show how to construct such lattice regularisations using the ...
Meneghelli C., J. Teschner, Teschner J., C. Meneghelli   +3 more
core   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

Advanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal, Tae‐Hyeok Kang, Pyuck‐Pa Choi, Subin Lee, Christoph Kirchlechner   +4 more
wiley   +1 more source

Boundary overlaps from Functional Separation of Variables

Journal of High Energy Physics
In this paper we show how the Functional Separation of Variables (FSoV) method can be applied to the problem of computing overlaps with integrable boundary states in integrable systems.
Simon Ekhammar, Nikolay Gromov, Paul Ryan   +2 more
doaj   +1 more source

Lattice approach to finite volume form-factors of the Massive Thirring (Sine-Gordon) model

Journal of High Energy Physics, 2017
In this paper we demonstrate, that the light-cone lattice approach for the Massive-Thirring (sine-Gordon) model, through the quantum inverse scattering method, admits an appropriate framework for computing the finite volume form-factors of local ...
Árpád Hegedűs
doaj   +1 more source

Integrable boundary conditions and W-extended fusion in the logarithmic minimal models LM(1,p) [PDF]

, 2008
We consider the logarithmic minimal models as 'rational' logarithmic conformal field theories with extended symmetry. To make contact with the extended picture starting from the lattice, we identify 4p - 2 boundary conditions as specific limits of ...
Rasmussen, Jorgen, Pearce, Paul A., Ruelle, Philippe, Philippe Ruelle, Paul A Pearce, Pearce, Paul P., Jørgen Rasmussen   +6 more
core   +1 more source

The large Limit of ( ) Integrals in Lattice Models

Nuclear Physics, 2020
The standard U(N) and SU(N) integrals are calculated in the large N limit. Our main finding is that for an important class of integrals this limit is different for two groups. We describe the critical behaviour of SU(N) models and discuss implications of our results for the large N behaviour of SU(N) lattice gauge theories at finite temperatures and ...
Borisenko, O., Chelnokov, V., Voloshyn, S.   +2 more
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