Results 11 to 20 of about 17,102 (215)
THz-Driven Coherent Phonon Fingerprints of Hidden Symmetry Breaking in 2D Layered Hybrid Perovskites. [PDF]
Adv MaterIntense THz pulses are employed to drive coherent phonons in 2D Ruddlesden‐Popper hybrid metal‐halide perovskites (HOIPs) from the (PEA)2(MA)n‐1PbnI3n+1 family, revealing mode‐selective spectroscopic signatures of inversion symmetry breaking in those nominally centrosymmetric materials. These findings provide a handle to decode nonlinear phonon driving
Urban JM +14 more
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Journal of Low Frequency Noise, Vibration and Active Control, 2022 This paper uses the two-scale fractal dimension transform and He’s formula derived from the ancient Chinese algorithm Ying Bu Zu Shu to find the approximate frequency–amplitude expression of the fractal and forced anharmonic oscillator that can be used ...
Alex Elías-Zúñiga +3 more
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Optimized basis expansion as an extremely accurate technique for solving time-independent Schr\"odinger equation [PDF]
, 2013 We use the optimized trigonometric finite basis method to find energy eigenvalues and eigenfunctions of the time-independent Schrodinger equation with high accuracy.
Gousheh, S. S., Mirzaei, M., Pedram, P.
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Analytic approximate eigenvalues by a new technique. Application to sextic anharmonic potentials
Results in Physics, 2018 A new technique to obtain analytic approximant for eigenvalues is presented here by a simultaneous use of power series and asymptotic expansions is presented.
D. Diaz Almeida, P. Martin
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Bootstrapping the gap in quantum spin systems
Journal of High Energy Physics, 2023 In this work we report on a new bootstrap method for quantum mechanical problems that closely mirrors the setup from conformal field theory (CFT). We use the equations of motion to develop an analogue of the conformal block expansion for matrix elements ...
Colin Oscar Nancarrow, Yuan Xin
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Kernel controlled real-time Complex Langevin simulation [PDF]
EPJ Web of Conferences, 2022 This study explores the utility of a kernel in complex Langevin simulations of quantum real-time dynamics on the Schwinger-Keldysh contour. We give several examples where we use a systematic scheme to find kernels that restore correct convergence of ...
Alvestad Daniel +2 more
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Eigenvalues and eigenfunctions of the anharmonic oscillator $V(x,y)=x^{2}y^{2}$ [PDF]
, 2013 We obtain sufficiently accurate eigenvalues and eigenfunctions for the anharmonic oscillator with potential $V(x,y)=x^{2}y^{2}$ by means of three different methods.
Fernández, Francisco M., Garcia, Javier
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The quartic anharmonic oscillator – an oscillator-basis expansion approach. II. Study of the wave functions and acceleration of the expansions convergence [PDF]
Ядерна фізика та енергетикаFor the traditional physical model of the quantum quartic anharmonic oscillator with the Hamiltonian H = ½(p2 + x2) + λx4, which plays a significant role in quantum field theory, elementary particle physics, and nuclear physics, its physical ...
V. A. Babenko, A. V. Nesterov
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On classical and functional approachs to mechanics
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011 In this paper the relevance of the classical trajectory of the anharmonic oscillator and the average trajectory obtained within the functional approach is considered.
E. V. Piskovskiy
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European Physical Journal C: Particles and Fields, 2018 In this article, we determine the thermodynamical properties of the anharmonic canonical ensemble within the cosmic-string framework. We use the ordinary statistics and the q-deformed superstatistics for this study.
Hadi Sobhani +2 more
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