Results 31 to 40 of about 12,041,533 (315)

Integrable cosmological models with non-minimal coupling and bounce solutions

open access: yesEPJ Web of Conferences, 2016
We remind the way to obtain integrable models with non-minimally coupled scalar fields. We are interesting to models with bounce solutions and compare bounce solutions in two known integrable models. We show that only one model has a bounce solution that
Pozdeeva Ekaterina, Vernov Sergey
doaj   +1 more source

Neumann–Rosochatius system for (m,n) string in $$AdS_3 \times S^3$$ A d S 3 × S 3 with mixed flux

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
$$SL(2,{\mathbb {Z}})$$ S L ( 2 , Z ) invariant action for probe (m, n) string in $$AdS_3\times S^3\times T^4$$ A d S 3 × S 3 × T 4 with mixed three-form fluxes can be described by an integrable deformation of an one-dimensional Neumann–Rosochatius (NR ...
Adrita Chakraborty, Kamal L. Panigrahi
doaj   +1 more source

The existence and convergence of the periodic solution of the system of complementary equations - nonlinear differential of the second class type Volterra [PDF]

open access: yesمجلة التربية والعلم, 2006
In this paper we study the existence and approximation of the periodic solutions for system of nonlinear integro-differential equations of Volterra type by Lebesque integrable function, By using weaker conditions of the function F(t,s,x,x) to be ...
Raad Petrus, Ghada Jameel
doaj   +1 more source

Painlevé solution of an integral equation [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2012
19 ...
Atas, Yasar Yilmaz, Bogomolny, Eugene
openaire   +3 more sources

Progresses on Some Open Problems Related to Infinitely Many Symmetries

open access: yesMathematics
The quest to reveal the physical essence of the infinitely many symmetries and/or conservation laws that are intrinsic to integrable systems has historically posed a significant challenge at the confluence of physics and mathematics.
Senyue Lou
doaj   +1 more source

Novel Particular Solutions, Breathers, and Rogue Waves for an Integrable Nonlocal Derivative Nonlinear Schrödinger Equation

open access: yesAdvances in Mathematical Physics, 2022
A determinant representation of the n-fold Darboux transformation for the integrable nonlocal derivative nonlinear Schödinger (DNLS) equation is presented.
Yali Shen, Ruoxia Yao
doaj   +1 more source

Integrable solutions for implicit fractional order functional differential equations with infinite delay

open access: yes, 2015
In this paper we study the existence of integrable solutions for initial value problem for implicit fractional order functional differential equations with infinite delay.
M. Benchohra, M. S. Souıd
semanticscholar   +1 more source

Symmetries and integrable systems

open access: yesFundamental Research
Symmetry plays key roles in modern physics especially in the study of integrable systems because of the existence of infinitely many local and nonlocal generalized symmetries.
Sen-Yue Lou, Bao-Feng Feng
doaj   +1 more source

Signatures of chaos and non-integrability in two-dimensional gravity with dynamical boundary

open access: yesEPJ Web of Conferences, 2016
We propose a model of two-dimensional dilaton gravity with a boundary. In the bulk our model coincides with the classically integrable CGHS model; the dynamical boundary cuts of the CGHS strong-coupling region.
Fitkevich Maxim
doaj   +1 more source

Are Fertility Preservation Procedures Before Gonadotoxic Therapy and Hematopoietic Stem Cell Transplantation Feasible and Safe in Very Young Children? A Retrospective Cohort Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Fertility preservation (FP) is increasingly integrated into the care of pediatric patients exposed to gonadotoxic therapy or conditioning for hematopoietic stem cell transplantation (HSCT), yet perioperative data in infants and toddlers remain scarce.
Kerstin Saalabian   +13 more
wiley   +1 more source

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