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Title: Deformation of Lie–Poisson algebras and chirality

Abstract

Linearization of a Hamiltonian system around an equilibrium point yields a set of Hamiltonian symmetric spectra: If λ is an eigenvalue of the linearized generator, -λ and $$\barλ$$ (hence, -$$\barλ$$) are also eigenvalues—the former implies a time-reversal symmetry, while the latter guarantees the reality of the solution. However, linearization around a singular equilibrium point (which commonly exists in noncanonical Hamiltonian systems) works out differently, resulting in breaking of the Hamiltonian symmetry of spectra; time-reversal asymmetry causes chirality. This interesting phenomenon was first found in analyzing the chiral motion of the rattleback, a boat-shaped top having misaligned axes of inertia and geometry [Z. Yoshida et al., Phys. Lett. A 381, 2772–2777 (2017)]. To elucidate how chiral spectra are generated, we study the three-dimensional Lie–Poisson systems and classify the prototypes of singularities that cause symmetry breaking. The central idea is the deformation of the underlying Lie algebra; invoking Bianchi’s list of all three-dimensional Lie algebras, we show that the so-called class-B algebras, which are produced by asymmetric deformations of the simple algebra so ( 3 ) , yield chiral spectra when linearized around their singularities. The theory of deformation is generalized to higher dimensions, including the infinite-dimensional Poisson manifolds relevant to fluid mechanics.

Authors:
ORCiD logo [1]; ORCiD logo [2]
  1. Univ. of Tokyo (Japan)
  2. Univ. of Texas, Austin, TX (United States)
Publication Date:
Research Org.:
Univ. of Texas, Austin, TX (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1800222
Alternate Identifier(s):
OSTI ID: 1646529
Grant/Contract Number:  
FG02-04ER54742; FG02-04ER- 54742
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Mathematical Physics
Additional Journal Information:
Journal Volume: 61; Journal Issue: 8; Journal ID: ISSN 0022-2488
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Physics; Hamiltonian mechanics; Differential geometry; Vortex dynamics; Differential topology; Lie algebras; Fluid mechanics; Associative algebra; Chirality; Differentiable manifold

Citation Formats

Yoshida, Zensho, and Morrison, Philip J. Deformation of Lie–Poisson algebras and chirality. United States: N. p., 2020. Web. doi:10.1063/1.5145218.
Yoshida, Zensho, & Morrison, Philip J. Deformation of Lie–Poisson algebras and chirality. United States. https://doi.org/10.1063/1.5145218
Yoshida, Zensho, and Morrison, Philip J. Thu . "Deformation of Lie–Poisson algebras and chirality". United States. https://doi.org/10.1063/1.5145218. https://www.osti.gov/servlets/purl/1800222.
@article{osti_1800222,
title = {Deformation of Lie–Poisson algebras and chirality},
author = {Yoshida, Zensho and Morrison, Philip J.},
abstractNote = {Linearization of a Hamiltonian system around an equilibrium point yields a set of Hamiltonian symmetric spectra: If λ is an eigenvalue of the linearized generator, -λ and $\barλ$ (hence, -$\barλ$) are also eigenvalues—the former implies a time-reversal symmetry, while the latter guarantees the reality of the solution. However, linearization around a singular equilibrium point (which commonly exists in noncanonical Hamiltonian systems) works out differently, resulting in breaking of the Hamiltonian symmetry of spectra; time-reversal asymmetry causes chirality. This interesting phenomenon was first found in analyzing the chiral motion of the rattleback, a boat-shaped top having misaligned axes of inertia and geometry [Z. Yoshida et al., Phys. Lett. A 381, 2772–2777 (2017)]. To elucidate how chiral spectra are generated, we study the three-dimensional Lie–Poisson systems and classify the prototypes of singularities that cause symmetry breaking. The central idea is the deformation of the underlying Lie algebra; invoking Bianchi’s list of all three-dimensional Lie algebras, we show that the so-called class-B algebras, which are produced by asymmetric deformations of the simple algebra so( 3) , yield chiral spectra when linearized around their singularities. The theory of deformation is generalized to higher dimensions, including the infinite-dimensional Poisson manifolds relevant to fluid mechanics.},
doi = {10.1063/1.5145218},
journal = {Journal of Mathematical Physics},
number = 8,
volume = 61,
place = {United States},
year = {Thu Aug 06 00:00:00 EDT 2020},
month = {Thu Aug 06 00:00:00 EDT 2020}
}

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