搜索结果: 46-60 共查到“物理学 SPECTRAL”相关记录116条 . 查询时间(0.234 秒)
Spectral Singularities of a Complex Spherical Barrier Potential and Their Optical Realization
Complex potential spectral singularity zero-width resonance gain medium threshold gain spherical dye laser
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2011/8/31
Abstract: The mathematical notion of a spectral singularity admits a physical interpretation as a zero-width resonance. It finds an optical realization as a certain type of lasing effect that occurs a...
Spectral Singularities of a Complex Spherical Barrier Potential and Their Optical Realization
Complex potential spectral singularity zero-width resonance gain medium threshold gain spherical dye laser
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2011/8/16
Abstract: The mathematical notion of a spectral singularity admits a physical interpretation as a zero-width resonance. It finds an optical realization as a certain type of lasing effect that occurs a...
Spectral functions of products of selfadjoint operators
Product of selfadjoint operators indefinite inner product definitizable operator
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2011/8/30
Abstract: Given two possibly unbounded selfadjoint operators A and G such that the resolvent sets of AG and GA are non-empty, it is shown that the operator AG has a spectral function on IR with singul...
Spectral properties of a 2D scalar wave equation with 1D-periodic coefficients
2D scalar wave equation 1D-periodic coefficients
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2011/7/26
Spectral properties of a 2D scalar wave equation with 1D-periodic coefficients.
Coupling of gravity to matter, spectral action and cosmic topology
Coupling of gravity spectral action cosmic topology
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2011/7/26
Abstract: We consider a model of modified gravity based on the spectral action functional, for a cosmic topology given by a spherical space form, and the associated slow-roll inflation scenario. We co...
Universality of local spectral statistics of random matrices
Random matrix Local semicircle law Tracy-Widom distribution Dyson Brownian motion
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2011/7/28
Abstract: The Wigner-Gaudin-Mehta-Dyson conjecture asserts that the local eigenvalue statistics of large random matrices exhibit universal behavior depending only on the symmetry class of the matrix e...
Noncommutative spectral geometry, algebra doubling and the seeds of quantization
Noncommutative spectral geometry algebra doubling the seeds of quantization
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2011/7/26
Abstract: A physical interpretation of the two-sheeted space, the most fundamental ingredient of noncommutative spectral geometry proposed by Connes as an approach to unification, is presented. It is ...
Homogenization of Steklov spectral problems with indefinite density function in perforated domains
Homogenization eigenvalue problems perforated domains indefinite weight function two-scale convergence
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2011/7/28
Abstract: The asymptotic behavior of second order self-adjoint elliptic Steklov eigenvalue problems with periodic rapidly oscillating coefficients and with indefinite (sign-changing) density function ...
Two-scale convergence of elliptic spectral problems with indefinite density function in perforated domains
Homogenization eigenvalue problems perforated domains indefinite weight function two-scale convergence
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2011/7/28
Abstract: Spectral asymptotics of linear periodic elliptic operators with indefinite (sign-changing) density function is investigated in perforated domains with the two-scale convergence method. The l...
Monte-Carlo-based spectral gain analysis for THz quantum cascade lasers
THz quantum cascade lasers Monte-Carlo-based spectral gain analysis
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2011/9/14
Employing an ensemble Monte Carlo transport simulation, we self-consistently analyze the spectral gain for different THz quantum cascade laser structures, considering bound-to-continuum as well as res...
Spectral and temporal characterization of a fused-quartz microresonator optical frequency comb
Spectral and temporal characterization fused-quartz microresonator optical frequency comb
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2011/9/1
We report on the fabrication of high-Q, fused-quartz microresonators and the parametric genera-tion of a frequency comb with 36 GHz line spacing using them. We have characterized the intrinsic stabili...
Investigating the Spectral Geometry of a Soft Wall
Spectral Geometry Quantum Physics High Energy Physics - Theory
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2011/7/27
Investigating the Spectral Geometry of a Soft Wall.
Quantum Dirac Field on Moyal-Minkowski Spacetime - Illustrating Quantum Field Theory over Lorentzian Spectral Geometry
Quantum Dirac Field Illustrating Quantum Field Theory Lorentzian Spectral Geometry
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2011/7/25
Abstract: A sketch of an approach towards Lorentzian spectral geometry (based on joint work with Mario Paschke) is described, together with a general way to define abstractly the quantized Dirac field...
Frequency-stabilization to 6x10^-16 via spectral-hole burning
spectral-hole Frequency-stabilization to 6x10^-16
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2011/8/29
We demonstrate two-stage laser stabilization based on a combination of Fabry-P磂rot and spectral-hole burning techniques. The laser is first pre-stabilized by
the Fabry-P磂rot cavity to a fractional-fr...
Wavelength tunable spectral compression in a dispersion-increasing fiber
Wavelength dispersion-increasing fiber
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2011/8/26
Adiabatic soliton spectral compression in a dispersion-increasing fiber is demonstrated both numerically and experimentally.We show a positively-chirped pulse provides better spectral compression in a...