Closed Vortex Filament in a Cylindrical Domain: Circulation Quantization
- URL: http://arxiv.org/abs/2201.12357v2
- Date: Fri, 4 Mar 2022 10:48:15 GMT
- Title: Closed Vortex Filament in a Cylindrical Domain: Circulation Quantization
- Authors: S.V. Talalov
- Abstract summary: This article investigates quantum oscillations of a vortex ring with zero thickness that evolves in a cylindrical domain $V = D times [0,L]$.
The values $Gamma_n$ are deduced rigorously as the consequence of the conventional scheme of quantum theory.
We prove that the basic circulation levels demonstrate a "fine structure"
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: This article investigates quantum oscillations of a vortex ring with zero
thickness that evolves in a cylindrical domain $V = D \times [0,L]$. The symbol
$D$ denotes the planar domain which is bounded by some closed connected curve
$S$. The quantization scheme of this dynamical system is based on the approach
proposed by the author earlier. As result, we find the discrete values
$\Gamma_n$ for circulation $\Gamma$.
In contrast to the traditional approach, where such quantities are usually
postulated, the values $\Gamma_n$ are deduced rigorously as the consequence of
the conventional scheme of quantum theory. The model demonstrates the splitting
of levels also. In particular, the levels correction values depend on the
domain $V$: both the cylinder height $L$ and the form of the curve $S$ affect
the final formula for the quantities $\Gamma_n$. Moreover, we prove that the
basic circulation levels demonstrate a "fine structure". These anomalous terms,
which are proportional to the value $\hbar^2$, are calculated in the article as
well.
The conclusions are compared with some results of numerical simulations by
other authors.
Related papers
- Theta-term in Russian Doll Model: phase structure, quantum metric and BPS multifractality [45.88028371034407]
We investigate the phase structure of the deterministic and disordered versions of the Russian Doll Model (RDM)<n>We find the pattern of phase transitions in the global charge $Q(theta,gamma)$, which arises from the BA equation.<n>We conjecture that the Hamiltonian of the RDM model describes the mixing in particular 2d-4d BPS sector of the Hilbert space.
arXiv Detail & Related papers (2025-10-23T17:25:01Z) - Absence of measurement- and unraveling-induced entanglement transitions in continuously monitored one-dimensional free fermions [0.0]
An unraveling phase $varphi$ interpolates between measurement schemes, corresponding to different unravelings of the same Lindblad master equation.<n>For $0 leq varphi pi/2$, entanglement ultimately obeys an area law, but only beyond the exponentially large scale.<n>Our analysis shows that for $0 leq varphi pi/2$, entanglement ultimately obeys an area law, but only beyond the exponentially large scale.
arXiv Detail & Related papers (2025-10-22T10:46:07Z) - Exact WKB method for radial Schrödinger equation [0.0]
We revisit exact WKB quantization for radial Schr"odinger problems from the modern resurgence perspective.<n>Using connection formulae at simple turning points and at regular singular points, we show that the non-cycle data give the spectrum.
arXiv Detail & Related papers (2025-10-13T14:34:27Z) - Mesoscopic Fluctuations and Multifractality at and across Measurement-Induced Phase Transition [46.176861415532095]
We explore statistical fluctuations over the ensemble of quantum trajectories in a model of two-dimensional free fermions.<n>Our results exhibit a remarkable analogy to Anderson localization, with $G_AB$ corresponding to two-terminal conductance.<n>Our findings lay the groundwork for mesoscopic theory of monitored systems, paving the way for various extensions.
arXiv Detail & Related papers (2025-07-15T13:44:14Z) - Out-of-equilibrium dynamics across the first-order quantum transitions of one-dimensional quantum Ising models [0.0]
We study the out-of-equilibrium dynamics of one-dimensional quantum Ising models in a transverse field $g$.
We consider nearest-neighbor Ising chains of size $L$ with periodic boundary conditions.
arXiv Detail & Related papers (2025-04-14T20:00:27Z) - Correlated volumes for extended wavefunctions on a random-regular graph [0.0]
We analyze the ergodic properties of a metallic wavefunction for the Anderson model in a disordered random-regular graph with branching number $k=2.
We extract their corresponding fractal dimensions $D_q$ in the thermodynamic limit together with correlated volumes $N_q$ that control finite-size effects.
arXiv Detail & Related papers (2023-11-13T19:15:18Z) - A Unified Framework for Uniform Signal Recovery in Nonlinear Generative
Compressed Sensing [68.80803866919123]
Under nonlinear measurements, most prior results are non-uniform, i.e., they hold with high probability for a fixed $mathbfx*$ rather than for all $mathbfx*$ simultaneously.
Our framework accommodates GCS with 1-bit/uniformly quantized observations and single index models as canonical examples.
We also develop a concentration inequality that produces tighter bounds for product processes whose index sets have low metric entropy.
arXiv Detail & Related papers (2023-09-25T17:54:19Z) - Measurement-induced phase transition for free fermions above one dimension [46.176861415532095]
Theory of the measurement-induced entanglement phase transition for free-fermion models in $d>1$ dimensions is developed.
Critical point separates a gapless phase with $elld-1 ln ell$ scaling of the second cumulant of the particle number and of the entanglement entropy.
arXiv Detail & Related papers (2023-09-21T18:11:04Z) - Weak universality, quantum many-body scars and anomalous
infinite-temperature autocorrelations in a one-dimensional spin model with
duality [0.0]
We study a one-dimensional spin-$1/2$ model with three-spin interactions and a transverse magnetic field $h$.
We compute the critical exponents $z$, $beta$, $gamma$ and $nu$, and the central charge $c$.
For a system with periodic boundary conditions, there are an exponentially large number of exact mid-spectrum zero-energy eigenstates.
arXiv Detail & Related papers (2023-07-20T18:00:05Z) - Theory of free fermions under random projective measurements [43.04146484262759]
We develop an analytical approach to the study of one-dimensional free fermions subject to random projective measurements of local site occupation numbers.
We derive a non-linear sigma model (NLSM) as an effective field theory of the problem.
arXiv Detail & Related papers (2023-04-06T15:19:33Z) - On parametric resonance in the laser action [91.3755431537592]
We consider the selfconsistent semiclassical Maxwell--Schr"odinger system for the solid state laser.
We introduce the corresponding Poincar'e map $P$ and consider the differential $DP(Y0)$ at suitable stationary state $Y0$.
arXiv Detail & Related papers (2022-08-22T09:43:57Z) - Near-optimal fitting of ellipsoids to random points [68.12685213894112]
A basic problem of fitting an ellipsoid to random points has connections to low-rank matrix decompositions, independent component analysis, and principal component analysis.
We resolve this conjecture up to logarithmic factors by constructing a fitting ellipsoid for some $n = Omega(, d2/mathrmpolylog(d),)$.
Our proof demonstrates feasibility of the least squares construction of Saunderson et al. using a convenient decomposition of a certain non-standard random matrix.
arXiv Detail & Related papers (2022-08-19T18:00:34Z) - Porter-Thomas fluctuations in complex quantum systems [0.0]
We find that the coupling to the decay channels can change the effective number of degrees of freedom from $nu = 1$ to $nu = 2$.
Our conclusions are based on a configuration-interaction Hamiltonian originally constructed to test the validity of transition-state theory.
arXiv Detail & Related papers (2021-06-29T11:07:49Z) - Quantum double aspects of surface code models [77.34726150561087]
We revisit the Kitaev model for fault tolerant quantum computing on a square lattice with underlying quantum double $D(G)$ symmetry.
We show how our constructions generalise to $D(H)$ models based on a finite-dimensional Hopf algebra $H$.
arXiv Detail & Related papers (2021-06-25T17:03:38Z) - The distribution of localization measures of chaotic eigenstates in the
stadium billiard [0.0]
The localization measures $A$ of localized chaotic eigenstates in the Poincar'e-Husimi representation.
The dependence of the standard deviation $sigma$ on $alpha$ is analyzed, as well as on the spectral parameter $beta$.
arXiv Detail & Related papers (2021-04-18T17:30:06Z) - $\mathcal{PT}$ phase transition in open quantum systems with Lindblad
dynamics [0.0]
We show that the eigenvalue structure of the Liouvillian clearly changes at the $mathcalPT$ symmetry breaking point.
In particular, in a $mathcalPT$ unbroken phase, some eigenvalues are pure imaginary numbers while in a $mathcalPT$ broken phase, all the eigenvalues are real.
Our results support the validity of the proposed criterion of Liouvillian $mathcalPT$ symmetry.
arXiv Detail & Related papers (2021-04-15T10:16:39Z) - Anharmonic oscillator: a solution [77.34726150561087]
The dynamics in $x$-space and in $(gx)-space corresponds to the same energy spectrum with effective coupling constant $hbar g2$.
A 2-classical generalization leads to a uniform approximation of the wavefunction in $x$-space with unprecedented accuracy.
arXiv Detail & Related papers (2020-11-29T22:13:08Z) - Emergent universality in critical quantum spin chains: entanglement
Virasoro algebra [1.9336815376402714]
Entanglement entropy and entanglement spectrum have been widely used to characterize quantum entanglement in extended many-body systems.
We show that the Schmidt vectors $|v_alpharangle$ display an emergent universal structure, corresponding to a realization of the Virasoro algebra of a boundary CFT.
arXiv Detail & Related papers (2020-09-23T21:22:51Z) - Differentially Quantized Gradient Methods [53.3186247068836]
We show that Differentially Quantized Gradient Descent (DQ-GD) attains a linear contraction factor of $maxsigma_mathrmGD, rhon 2-R$.
No algorithm within a certain class can converge faster than $maxsigma_mathrmGD, 2-R$.
arXiv Detail & Related papers (2020-02-06T20:40:53Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.