Project description
Elucidating the behaviour of moment polytopes
Moment polytopes provide a geometric way to represent information about the dynamics of a system with symmetries. They are important in fields including representation theory and quantum physics. With the support of the Marie Skłodowska-Curie Actions programme, the AsympTensorPolytope project aims to study the behaviour of moment polytopes of families of tensors and their ability to prove bounds on (asymptotic) tensor rank and subrank. In particular, the project will study the moment polytopes of unit tensors and of matrix multiplication tensors to investigate whether their moment polytopes are distinct from the generic polytopes of their respective format. The techniques will be applicable to other areas including bosonic or fermionic systems, algebras and quiver representations.
Objective
In AsympTensorPolytope I will study the behavior of moment polytopes of families of tensors, as well as their ability to prove bounds on (asymptotic) tensor rank and subrank. I aim to determine properties of the moment polytopes of the unit tensors of varying ranks, as well as matrix multiplication tensors, in particular whether they are distinct from the generic polytopes of their respective format.
To achieve this, I will use a combination of the various different descriptions of moment polytopes, which come in representation-theoretic, symplectic-geometric, intersection-theoretic, or more combinatorial forms. In particular, I will study the behavior of moment polytopes under taking direct sums and Kronecker products of tensors, as well as recently obtained computational results.
The project has the potential of proving new bounds on the complexity of various tensors, as well as furthering our understanding of Strassen's asymptotic spectrum of tensors. The techniques here can also be extended to understand other settings, such as symmetric or antisymmetric tensors (bosonic or fermionic systems), algebras and quiver representations. As a result, AsympTensorPolytope will have an impact in other contexts such as the complexity of matrix multiplication, quantum information theory and combinatorics.
Fields of science (EuroSciVoc)
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Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
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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
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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.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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(opens in new window) HORIZON-MSCA-2024-PF-01
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1165 KOBENHAVN
Denmark
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