Research output: Contribution to journal › Article

**Complex plane representations and stationary states in cubic and quintic resonant systems.** / Biasi, Anxo; Bizon, Piotr; Evnin, Oleg.

Research output: Contribution to journal › Article

Biasi, A, Bizon, P & Evnin, O 2019, 'Complex plane representations and stationary states in cubic and quintic resonant systems', *J. Phys. A: Math. Theor.*, vol. 52, no. 43, 435201. https://doi.org/10.1088/1751-8121/ab4406

Biasi, A., Bizon, P., & Evnin, O. (2019). Complex plane representations and stationary states in cubic and quintic resonant systems. *J. Phys. A: Math. Theor.*, *52*(43), [435201]. https://doi.org/10.1088/1751-8121/ab4406

Biasi A, Bizon P, Evnin O. Complex plane representations and stationary states in cubic and quintic resonant systems. J. Phys. A: Math. Theor. 2019 Sep 30;52(43). 435201. https://doi.org/10.1088/1751-8121/ab4406

@article{9c7181520206401fb7daf3e120278bf3,

title = "Complex plane representations and stationary states in cubic and quintic resonant systems",

abstract = "Weakly nonlinear energy transfer between normal modes of strongly resonant PDEs is captured by the corresponding effective resonant systems. In a previous article, we have constructed a large class of such resonant systems (with specific representatives related to the physics of Bose-Einstein condensates and Anti-de Sitter spacetime) that admit special analytic solutions and an extra conserved quantity. Here, we develop and explore a complex plane representation for these systems modelled on the related cubic Szego and LLL equations. To demonstrate the power of this representation, we use it to give simple closed form expressions for families of stationary states bifurcating from all individual modes. The conservation laws, the complex plane representation and the stationary states admit furthermore a natural generalization from cubic to quintic nonlinearity. We demonstrate how two concrete quintic PDEs of mathematical physics fit into this framework, and thus directly benefit from the analytic structures we present: the quintic nonlinear Schroedinger equation in a one-dimensional harmonic trap, studied in relation to Bose-Einstein condensates, and the quintic conformally invariant wave equation on a two-sphere, which is of interest for AdS/CFT-correspondence.",

keywords = "math-ph, hep-th, math.AP, math.MP, nlin.SI",

author = "Anxo Biasi and Piotr Bizon and Oleg Evnin",

note = "v2: version accepted for publication",

year = "2019",

month = "9",

day = "30",

doi = "10.1088/1751-8121/ab4406",

language = "English",

volume = "52",

journal = "Journal of Physics A: Mathematical and Theoretical",

issn = "1751-8113",

publisher = "IOP Publishing Ltd.",

number = "43",

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TY - JOUR

T1 - Complex plane representations and stationary states in cubic and quintic resonant systems

AU - Biasi, Anxo

AU - Bizon, Piotr

AU - Evnin, Oleg

N1 - v2: version accepted for publication

PY - 2019/9/30

Y1 - 2019/9/30

N2 - Weakly nonlinear energy transfer between normal modes of strongly resonant PDEs is captured by the corresponding effective resonant systems. In a previous article, we have constructed a large class of such resonant systems (with specific representatives related to the physics of Bose-Einstein condensates and Anti-de Sitter spacetime) that admit special analytic solutions and an extra conserved quantity. Here, we develop and explore a complex plane representation for these systems modelled on the related cubic Szego and LLL equations. To demonstrate the power of this representation, we use it to give simple closed form expressions for families of stationary states bifurcating from all individual modes. The conservation laws, the complex plane representation and the stationary states admit furthermore a natural generalization from cubic to quintic nonlinearity. We demonstrate how two concrete quintic PDEs of mathematical physics fit into this framework, and thus directly benefit from the analytic structures we present: the quintic nonlinear Schroedinger equation in a one-dimensional harmonic trap, studied in relation to Bose-Einstein condensates, and the quintic conformally invariant wave equation on a two-sphere, which is of interest for AdS/CFT-correspondence.

AB - Weakly nonlinear energy transfer between normal modes of strongly resonant PDEs is captured by the corresponding effective resonant systems. In a previous article, we have constructed a large class of such resonant systems (with specific representatives related to the physics of Bose-Einstein condensates and Anti-de Sitter spacetime) that admit special analytic solutions and an extra conserved quantity. Here, we develop and explore a complex plane representation for these systems modelled on the related cubic Szego and LLL equations. To demonstrate the power of this representation, we use it to give simple closed form expressions for families of stationary states bifurcating from all individual modes. The conservation laws, the complex plane representation and the stationary states admit furthermore a natural generalization from cubic to quintic nonlinearity. We demonstrate how two concrete quintic PDEs of mathematical physics fit into this framework, and thus directly benefit from the analytic structures we present: the quintic nonlinear Schroedinger equation in a one-dimensional harmonic trap, studied in relation to Bose-Einstein condensates, and the quintic conformally invariant wave equation on a two-sphere, which is of interest for AdS/CFT-correspondence.

KW - math-ph

KW - hep-th

KW - math.AP

KW - math.MP

KW - nlin.SI

U2 - 10.1088/1751-8121/ab4406

DO - 10.1088/1751-8121/ab4406

M3 - Article

VL - 52

JO - Journal of Physics A: Mathematical and Theoretical

JF - Journal of Physics A: Mathematical and Theoretical

SN - 1751-8113

IS - 43

M1 - 435201

ER -

ID: 47633232