Joint Nordita/Uppsala meeting: Eric Bergshoeff (Groningen U), Shota Komatsu (CERN)
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Europe/Stockholm
Albano 3: 6228 - Mega (22 seats) (Albano Building 3)
Albano 3: 6228 - Mega (22 seats)
Albano Building 3
22
Description
13:15: Eric Bergshoeff
Title "Massive Higher-Spin Fields in the Fractional Quantum Hall Effect"
Abstract: In this talk I will compare the massive chiral spin-2 modes that have been recently observed in the Fractional Quantum Hall effect with the Fierz-Pauli description of massive spin-2 modes in quantum field theory. Subsequently, I will discuss the generalization to massive chiral higher-spin modes both in the Fractional Quantum Hall effect and quantum field theory. In the final part of the talk I will discuss a few generalizations.
15:00: Shota Komatus
Title "BMN conjecture and open-closed-open triality"
Abstract: We revisit the Berenstein-Maldacena-Nastase (BMN) conjecture relating M-theory on a PP-wave background and Matrix Quantum Mechanics (MQM) of N×N matrices. In particular, we study the BMN MQM at strong coupling and finite N and derive an effective Hamiltonian that describes non-relativistic free particles in a harmonic trap. The energy spectrum predicted by this Hamiltonian matches the supergravity excitation spectrum around the PP-wave background, if we further assume the existence of bound states. Our derivation is based on the strong coupling expansion of the wavefunction and supersedes the naive path integral approach that can lead to incorrect results, as we demonstrate in a simple toy model. We conclude by discussing the relation between the BMN conjecture and AdS_4/CFT_3.
