Chaos in BFSS and ABJM matrix models

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2021-7
Taşcı, Cankut
In this thesis, we focus on the chaotic dynamics emerging from Banks-Fischler- Shenker-Susskind (BFSS) and Aharony-Bergman-Jafferis-Maldacena (ABJM) models. We first direct our attention on the bosonic part of the BFSS model and introduce mass deformation terms. Using ansatz configurations involving fuzzy-2 and fuzzy-4 spheres with collective time dependence, we find a family of reduced effective Hamiltonians through which we explore the chaotic dynamics emerging from these models. In order to reveal the structure of the chaotic dynamics, we calculate the Lyapunov exponents and plot the Poincaré sections at several different values of the parameters of the system. Secondly, we focus on the bosonic part of the mass deformed ABJM model and obtain a matrix model by reducing it from 2+1 to 0+1 dimensions. Using ansatz configurations consisting of Gomis, Rodriguez-Gomez, Van Raamsdonk and Verlinde (GRVV) matrices, which also describe fuzzy-2 spheres with collective time dependence, we obtain reduced effective Hamiltonians and explore their chaotic dynamics. Relation of our results to the Maldacena-Shenker-Stanford (MSS) bound λ ≤ 2ℼT and the largest Lyapunov exponent is also discussed in detail in both cases.

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Citation Formats
C. Taşcı, “Chaos in BFSS and ABJM matrix models,” M.S. - Master of Science, Middle East Technical University, 2021.