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We give a simple and explicit constructions of various semi-discrete surfaces and discrete $K$-surfaces in terms of the Jacobi elliptic functions using $\tau$-functions. Their periodicities are also determined.

Differential Geometry · Mathematics 2024-06-26 Kenji Kajiwara , Shota Shigetomi , Seiichi Udagawa

We propose a quantum oscillation experiment by which the rotation of an underdoped YBa2Cu3O6+x sample about two different axes with respect to the orientation of the magnetic field can be used to infer the shape of the in-plane…

Superconductivity · Physics 2015-05-13 N. Harrison , R. D. McDonald

A quantum-mechanical wave function is complex, but all observations are real, expressible through expectation values and transition matrix elements that involve the wave functions. It can be useful to separate at the outset the amplitude…

Quantum Physics · Physics 2025-07-01 A. R. P. Rau

The quantum field of a single particle is expressed as the sum of the particle's ordinary wave function and the vacuum fluctuations. An exact quantum-field calculation shows that the squared amplitude of this field sums, at any time, to a…

Quantum Physics · Physics 2007-05-23 Benjamin Ross

An adaptation of the WKB method in the deformation quantization formalism is presented with the aim to obtain an approximate technique of solving the eigenvalue problem for energy in the phase space quantum approach. A relationship between…

Quantum Physics · Physics 2016-07-18 Jaromir Tosiek , Ruben Cordero , Francisco J. Turrubiates

In quantum information science, the phase of a wavefunction plays an important role in encoding information. While most experiments in this field rely on dynamic effects to manipulate this information, an alternative approach is to use…

Mesoscale and Nanoscale Physics · Physics 2007-12-24 P. J. Leek , J. M. Fink , A. Blais , R. Bianchetti , M. Göppl , J. M. Gambetta , D. I. Schuster , L. Frunzio , R. J. Schoelkopf , A. Wallraff

The deformation of a Fermi surface is a fundamental phenomenon leading to a plethora of exotic quantum phases. Understanding these phases, which play crucial roles in a wealth of systems, is a major challenge in atomic and condensed-matter…

Quantum Gases · Physics 2014-09-23 K. Aikawa , S. Baier , A. Frisch , M. Mark , C. Ravensbergen , F. Ferlaino

Quantum state wave functionals are constructed in exact form for the graviton-like field theory obtained by breaking down the topological symmetry of the string action related with the Euler characteristic of the world-surface; their…

High Energy Physics - Theory · Physics 2019-09-04 R. Cartas-Fuentevilla , A. Escalante-Hernández , A. Herrera-aguilar , R. Navarro-Pérez

Under the framework of the semiclassical theory, we investigate the equilibrium-state properties of a spin polarized dipolar Fermi gas through full numerical calculation. We show that the Fermi surfaces in both real and momentum spaces are…

Quantum Gases · Physics 2009-11-18 J. -N. Zhang , S. Yi

In geophysical environments, wave motions that are shaped by the action of gravity and global rotation bear the name of gravito-inertial waves. We present a geometrical description of gravito-inertial surface waves, which are low-frequency…

Analysis of PDEs · Mathematics 2026-04-21 Yves Colin de Verdière , Jérémie Vidal

We present a theoretical formulation of the one-electron problem constrained on the surface of a cylindrical tubule with varying diameter. Because of the cylindrical symmetry, we may reduce the problem to a one-dimensional equation for each…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Nobuhisa Fujita

Several new physics experiments in 1998 were performed and analyzed to show the subtlety of quantum theory, including the "wave-particle duality" and the non-separability of two-particle entangled state. Here it is shown that the…

Quantum Physics · Physics 2007-05-23 Guang-jiong Ni

We seek an extension to Schrodinger's equation that incorporates the macroscopic measurement-induced wavefunction collapse phenomenon. We find that a suitable hybrid between two leading approaches, the Bohm-de Broglie pilot-wave and…

Statistical Mechanics · Physics 2026-05-05 Axel van de Walle

Wave-like partial differential equations occur in many engineering applications. Here the engineering setup is embedded into the Hilbert space framework of functional analysis of modern mathematical physics. The notion wave-like is a…

Mathematical Physics · Physics 2024-05-07 Reinhard Honegger , Michael Lauxmann , Barbara Priwitzer

The emergence of quantum statistical mechanics from individual pure states of closed many-body systems is currently under intensive investigations. While most efforts have been put on the impacts of the direct interaction (i.e., the usual…

Statistical Mechanics · Physics 2018-12-26 Chushun Tian , Kun Yang , Ping Fang , Hai-Jun Zhou , Jiao Wang

The classical dynamics and the construction of quantum states in a plane wave curved spacetime are examined, paying particular attention to the similarities with the case of an electromagnetic plane wave in flat spacetime. A natural map…

General Relativity and Quantum Cosmology · Physics 2024-06-28 Giulio Audagnotto , Antonino Di Piazza

Emerging models of quantum computation driven by multi-photon quantum interference, while not universal, may offer an exponential advantage over classical computers for certain problems. Implementing these circuits via geometric phase gates…

Quantum Physics · Physics 2012-07-04 Anthony Laing , Thomas Lawson , Enrique Martín López , Jeremy L. O'Brien

The Differential Transfer Matrix Method is extended to the complex plane, which allows dealing with singularities at turning points. The result for real-valued systems are simplified and a pair of basis functions is found. These bases are a…

Quantum Physics · Physics 2016-12-28 Sina Khorasani

In this short paper, we propose a new quantum effect that naturally emerges from describing the quantum particle as a classical fluid. Following the hydrodynamical formulation of quantum mechanics for a particle in a finite convex region,…

Quantum Physics · Physics 2024-10-01 Tomer Shushi

Quantum mechanical wave functions have phases. These phases either initial or acquired during time evolution usually do not enter the final expressions for observable physical quantities. Nevertheless in many cases the observable physical…

General Physics · Physics 2021-08-17 S. V. Gantsevich