dorsal/arxiv
View SchemaHigh-Energy Nuclear Physics with Lorentz Symmetry Violation
| Authors | Luis Gonzalez-Mestres |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9708028 |
| URL | https://arxiv.org/abs/nucl-th/9708028 |
Abstract
If textbook Lorentz invariance is actually a property of the equations describing a sector of the excitations of vacuum above some critical distance scale, several sectors of matter with different critical speeds in vacuum can coexist and an absolute rest frame (the vacuum rest frame) may exist without contradicting the apparent Lorentz invariance felt by "ordinary" particles (particles with critical speed in vacuum equal to $c$, the speed of light). Sectorial Lorentz invariance, reflected by the fact that all particles of a given dynamical sector have the same critical speed in vacuum, will then be an expression of a fundamental sectorial symmetry (e.g. preonic grand unification or extended supersymmetry) protecting a parameter of the equations of motion. Furthermore, the sectorial Lorentz symmetry may be only a low-energy limit, in the same way as the relation $\omega $ (frequency) = $c_s$ (speed of sound) $k$ (wave vector) holds for low-energy phonons in a crystal. In this context, phenomena such as the absence of Greisen-Zatsepin-Kuzmin cutoff for protons and nuclei and the stability of unstable particles (e.g. neutron, several nuclei...) at very high energy are basic properties of a wide class of noncausal models where local Lorentz invariance is broken introducing a fundamental length. Observable phenomena are expected at very short wavelength scales, even if Lorentz symmetry violation remains invisible to standard low-energy tests. We present a detailed discussion of the implications of Lorentz symmetry violation for very high-energy nuclear physics.
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"abstract": "If textbook Lorentz invariance is actually a property of the equations\ndescribing a sector of the excitations of vacuum above some critical distance\nscale, several sectors of matter with different critical speeds in vacuum can\ncoexist and an absolute rest frame (the vacuum rest frame) may exist without\ncontradicting the apparent Lorentz invariance felt by \"ordinary\" particles\n(particles with critical speed in vacuum equal to $c$, the speed of light).\nSectorial Lorentz invariance, reflected by the fact that all particles of a\ngiven dynamical sector have the same critical speed in vacuum, will then be an\nexpression of a fundamental sectorial symmetry (e.g. preonic grand unification\nor extended supersymmetry) protecting a parameter of the equations of motion.\nFurthermore, the sectorial Lorentz symmetry may be only a low-energy limit, in\nthe same way as the relation $\\omega $ (frequency) = $c_s$ (speed of sound) $k$\n(wave vector) holds for low-energy phonons in a crystal. In this context,\nphenomena such as the absence of Greisen-Zatsepin-Kuzmin cutoff for protons and\nnuclei and the stability of unstable particles (e.g. neutron, several\nnuclei...) at very high energy are basic properties of a wide class of\nnoncausal models where local Lorentz invariance is broken introducing a\nfundamental length. Observable phenomena are expected at very short wavelength\nscales, even if Lorentz symmetry violation remains invisible to standard\nlow-energy tests. We present a detailed discussion of the implications of\nLorentz symmetry violation for very high-energy nuclear physics.",
"arxiv_id": "nucl-th/9708028",
"authors": [
"Luis Gonzalez-Mestres"
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"title": "High-Energy Nuclear Physics with Lorentz Symmetry Violation",
"url": "https://arxiv.org/abs/nucl-th/9708028"
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