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Singular cotangent models in fluids with dissipation
(2023-04)
Article
Open AccessIn this article we analyze several mathematical models with singularities where the classical cotangent model is replaced by a -cotangent model. We provide physical interpretations of the singular symplectic geometry ... -
Analysis of the epidemiological dynamic of monkeypox from 15th May to 31st August 2022
(2022-09-01)
Article
Open AccessWe show that in all countries with more than 1000 monkeypox cases at the end of August 2022, the evolution of the total number of cases is described by the Gompertz growth model. Although the data collection has many ... -
Low-energy scattering parameters: A theoretical derivation of the effective range and scattering length for arbitrary angular momentum
(AMER INST PHYSICS, 2023-02-01)
Article
Restricted access - publisher's policyThe most important parameters in the study of low-energy scattering are the s-wave and p-wave scattering lengths and the s-wave effective range. We solve the scattering problem and find two useful formulas for the scattering ... -
Abrupt transition from low-coherence to high-coherence radiation in a semiconductor laser with optical feedback
(2023-01-19)
Article
Open AccessSemiconductor lasers are very sensitive to optical feedback. Although it is well known that coherent feedback lowers the threshold of the laser, the characteristics of the transition from low-coherence radiation—dominated ... -
Stabilisation of spatially periodic states by non-Hermitian potentials
(2023-03)
Article
Restricted access - publisher's policyWe uncover new families of stable periodic solutions by the introduction of non-Hermitian potentials in the universal complex Ginzburg–Landau equation. We perform a comprehensive analysis on the dynamics and stability of ... -
Non-Hermitian control of optical turbulence in systems with fractional dispersion
(Elsevier, 2022-12-01)
Article
Open AccessWe show an efficient mechanism to control optical turbulence in systems with different dispersion laws, including parabolic, sub-diffractive, hyper-diffractive or general fractional dispersion. The method is based on the ... -
The Neutron Star Population in M28: A Joint Chandra/GBT Look at Pulsar Paradise
(Institute of Physics (IOP), 2022-12-01)
Article
Open AccessWe present the results of a deep study of the neutron star (NS) population in the globular cluster M28 (NGC 6626), using the full 330 ks 2002–2015 ACIS data set from the Chandra X-ray Observatory and coordinated radio ... -
Intrinsic correlation between the fraction of liquidlike zones and the beta relaxation in high-entropy metallic glasses
(American Institute of Physics (AIP), 2022-10-21)
Article
Open AccessLacking the structural information of crystalline solids, the origin of the relaxation dynamics of metallic glasses is unclear. Here, we report the evolution of stress relaxation of high-entropy metallic glasses with ... -
Self-sustainment of coherent structures in counter-rotating Taylor-Couette flow
(Cambridge University Press, 2022-11-25)
Article
Restricted access - publisher's policyWe investigate the local self-sustained process underlying spiral turbulence in counter-rotating Taylor–Couette flow using a periodic annular domain, shaped as a parallelogram, two of whose sides are aligned with the ... -
Effect of Si and B on the electrochemical behavior of FeCoNiCr-based high-entropy amorphous alloys
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-12-13)
Article
Open AccessThe ability to produce high-entropy alloys with an amorphous structure, so-called high-entropy metallic glasses (HEMGs), offers the possibility to produce new compositions with good mechanical properties and resistance to ... -
Multisystem inflammatory syndrome in children in western countries: decreasing incidence as the pandemic progresses? An observational multicenter international cross-sectional study
(Lippincott Williams & Wilkins, 2022-09-12)
Article
Open AccessMultisystemic inflammatory syndrome temporally associated with SARS-CoV-2 infection in children (MIS-C) has been reported worldwide.1–7 The case definition of MIS-C has been estab- lished by different institutions and ... -
Delayed elasticity of metallic glasses: Loading time and temperature dependences of the anelastic relaxation
(American Physical Society (APS), 2022-12-09)
Article
Open AccessOne of the hallmarks of disordered matter is the large amplitude of the anelastic deformation, i.e., the fraction of reversible deformation that is not instantaneously recovered after the release of load but is delayed in ...