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The energy lost by a rotation-powered pulsar is carried by a relativistic flow containing a mixture of electromagnetic fields and particles. In the inner regions, this is thought to be a magnetically dominated, cold, electron-positron wind…

High Energy Astrophysical Phenomena · Physics 2015-05-30 Ioanna Arka , John G. Kirk

Warp-drives are solutions of general relativity widely considered unphysical due to high negative energy requirements. While the majority of the literature has focused on macroscopic solutions towards the goal of interstellar travel, in…

General Relativity and Quantum Cosmology · Physics 2024-05-20 Lorenzo Pieri

Solitons are self-sustained wavepackets that occur in many physical systems. Their recent demonstration in optical microresonators has provided a new platform for study of nonlinear optical physics with practical implications for…

Optics · Physics 2018-10-24 Xu Yi , Qi-Fan Yang , Ki Youl Yang , Kerry Vahala

We report that defocusing cubic media with spatially inhomogeneous nonlinearity, whose strength increases rapidly enough toward the periphery, can support stable bright localized modes. Such nonlinearity landscapes give rise to a variety of…

The idea that dark energy is gravitational waves may explain its strength and its time-evolution provided that the additional energy comes from a background. A possible concept is that dark energy is the ensemble of coherent bursts…

Cosmology and Nongalactic Astrophysics · Physics 2014-03-05 Peter L. Biermann , Benjamin C. Harms

The Special Relativity allows the possibility of a class of particles, known tachyons, that have spacelike 4-velocities, i.e., which move with velocity greater than speed of light in vacuum. In this existence frame, the tachyons have energy…

General Physics · Physics 2023-08-29 Wytler Cordeiro dos Santos

Light-like galileon solutions have been used to investigate the chronology problem in galileon-like theories, and in some cases may also be considered as solitons, evading a non-existence constraint from a zero-mode argument. Their…

High Energy Physics - Theory · Physics 2014-06-30 Shuang-Yong Zhou

We review the available evidence according to which physical media alter the Minkowskian spacetime with consequential alteration of the speed of light; we point out the apparent emergence of superluminal speeds within the hyperdense…

General Physics · Physics 2007-05-23 Yu. Arestov , R. M. Santilli , V. Solovianov

It recently has been demonstrated that signals conveyed by evanescent modes can travel faster than light. In this report some special features of signals are introduced and investigated, for instance the fundamental property that signals…

Classical Physics · Physics 2017-09-27 Guenter Nimtz

Superfluidity, the ability of a fluid to move without dissipation, is one of the most spectacular manifestations of the quantum nature of matter. We explore here the possibility of superfluid motion of light. Controlling the speed of a…

Quantum Gases · Physics 2011-07-04 Patricio Leboeuf , Simon Moulieras

Overcoming the decoherence bottleneck remains a central challenge for advancing coherent superconducting quantum device and information technologies. Solitons -- non-dispersive wave packets stabilized by the collective synchronization of…

Superconductivity · Physics 2025-07-31 M. Mootz , C. Vaswani , C. Huang , K. J. Lee , A. Khatri , P. Mandal , J. H. Kang , L. Luo , I. E. Perakis , C. B. Eom , J. Wang

We demonstrate that the commonly known concept, which treats solitons as nonsingular solutions produced by the interplay of nonlinear self-attraction and linear dispersion, may be extended to include modes with a relatively weak singularity…

Pattern Formation and Solitons · Physics 2020-02-19 Hidetsugu Sakaguchi , Boris A. Malomed

We show that three-band superconductors with broken time reversal symmetry allow magnetic flux-carrying stable topological solitons which have only a slightly higher energy than ordinary vortices. Therefore they can be induced by…

Superconductivity · Physics 2011-12-13 Julien Garaud , Johan Carlstrom , Egor Babaev

First, we extend the special relativity into the superluminal case and put forward a superluminal theory of kinematics, in which we show that the temporal coordinate need exchanging with one of the spatial coordinates in a superluminal…

General Physics · Physics 2009-07-22 Z. C. Tu , Z. Y. Wan

If Lorentz invariance is only an approximate property of equations describing a sector of matter above some critical distance scale, the speed of light c will not necessarily be the only critical speed in vacuum. Superluminal sectors of…

High Energy Physics - Phenomenology · Physics 2008-02-03 Luis Gonzalez-Mestres

Warp drive spacetimes capable of superluminal transportation, were first introduced in 1994 by Miguel Alcubierre and then generalized by others. These spacetimes violated the Weak Energy Condition (WEC). Lentz proposed a new type of warp…

General Relativity and Quantum Cosmology · Physics 2025-11-25 Bill Celmaster , Steve Rubin

It is known that superluminal transmission of information and energy contradicts Einstein's relativity. Here we announce an unusual TOE called 'nature theory' in which impossible things become possible. We present the scheme of an apparatus…

Quantum Physics · Physics 2007-05-23 Zbigniew A. Nowacki

A fully analytical theory of a traveling soliton in a one-dimensional fermionic superfluid is developed within the framework of time-dependent self-consistent Bogoliubov-de Gennes equations, which are solved exactly in the Andreev…

Quantum Gases · Physics 2016-01-28 Dmitry K. Efimkin , Victor Galitski

Although the group delay of classical pulses through a barrier may suggest superluminality, the information transfer is limited by the precursor which propagates at the vacuum light speed. Single photons, however, have infinite tails, and…

Quantum Physics · Physics 2024-09-24 Jan Gulla , Johannes Skaar

Currently, effective phonons (renormalized or interacting phonons) rather than solitary waves (for short, solitons) are regarded as the energy carriers in nonlinear lattices. In this work, by using the approximate soliton solutions of the…

Statistical Mechanics · Physics 2018-02-12 Yi Ming , Liu Ye , Han-Shuang Chen , Shi-Feng Mao , Hui-Min Li , Ze-Jun Ding