Project description
Extending the realm of special functions with a focus on elliptic integrals
Mathematics provides the language to describe the relationships that govern interactions in the world around us. Systems of partial differential equations are fundamental to these descriptions. The last decade has witnessed an explosion of research regarding Calogero-Moser-Sutherland (CMS) models relevant to exact solutions of important one-dimensional quantum mechanical multi-particle problems and their classical counterparts. These models are fundamental to numerous fields not only in pure mathematics but also in theoretical physics, including quantum field theory and condensed matter physics. The EU-funded ELLIS-SDI project will extend these models with a focus on elliptic functions and integrals and the correspondence between CMS models and Painlevé hierarchies, another important class of differential equations.
Objective
The proposal studies relativistic generalizations of quantum integrable models of Calogero-Moser-Sutherland (CMS) type and their deformations, and the correspondence between the CMS models and the Painlevé hierarchies. It is divided into several parts. The first part investigates the van Diejen model (which is the most complicated model in the CMS family) and its sophisticated limiting case proposed by Takemura. The aim is to construct exact eigenfunctions of these two models using the kernel function methods. These eigenfunctions belong to an emerging new class in the theory of special functions. The second part is devoted to the study of integrable deformations of the relativistic CMS model (Ruijsenaars model), going back to the works of Chalykh, Feigin, Veselov and Sergeev. In the trigonometric case, the deformed models are known to be integrable and the eigenfunctions of the principal Hamiltonian are given in terms of super-Macdonald polynomials. Using the kernel function identities, I will prove that all higher Hamiltonians of this model are diagonalized by the super-Macdonald polynomials. This will be used to establish orthogonality of the super-Macdonald polynomials. Extending this, I plan to establish integrability of the elliptic case. Furthermore, by using algebraic tools such as Cherednik operators and double affine Hecke algebras, and building upon a recent work of Chalykh, I will construct quantum Lax matrices for the deformed models in all cases. Lastly, we aim to find a conceptual link between elliptic Cherednik algebras and higher Painlevé systems. Namely, first we will obtain the classical Inozemtsev system from Cherednik algebra by a Hamiltonian reduction. By relating this to the recent results of Bertolo, Cafasso, and Rubtsov, we will then find an alternative and more natural interpretation of the higher Painlevé equations as isomonodromic deformations.
Fields of science (EuroSciVoc)
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CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions
MAIN PROGRAMME
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H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
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Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) H2020-MSCA-IF-2019
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
LS2 9JT Leeds
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.