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Energy landscape of the finite-size mean-field 2-spin spherical model and topology trivialization

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Energy landscape of the finite-size mean-field 2-spin spherical model and topology trivialization

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Título Energy landscape of the finite-size mean-field 2-spin spherical model and topology trivialization
Autor Mehta, Dhagash
Hauenstein, Jonathan D.
Niemerg, Matthew
Simm, Nicholas J.
Stariolo, Daniel Adrian
Abstract Motivated by the recently observed phenomenon of topology trivialization of potential energy landscapes (PELs) for several statistical mechanics models, we perform a numerical study of the finite-size 2-spin spherical model using both numerical polynomial homotopy continuation and a reformulation via non-Hermitian matrices. The continuation approach computes all of the complex stationary points of this model while the matrix approach computes the real stationary points. Using these methods, we compute the average number of stationary points while changing the topology of the PEL as well as the variance. Histograms of these stationary points are presented along with an analysis regarding the complex stationary points. This work connects topology trivialization to two different branches of mathematics: algebraic geometry and catastrophe theory, which is fertile ground for further interdisciplinary research.
Contido em Physical review. E, Statistical, nonlinear, and soft matter physics. Vol. 91, no. 2 (Feb. 2015), 022133, 9 p.
Assunto Análise numérica
Geometria
Mecânica estatística
Polinomios
Topologia
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/116511
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