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The development of special and general relativity has relied significantly on ideas of symmetry. Similarly, modern efforts to test these theories have often sought either violations or extensions of the symmetries seen, and symmetry is regularly used a tool in seeking new applications. In this Special Issue of symmetry, we explore some contemporary research related to symmetry in special and general relativity.
Lorentz symmetry  rotation invariance  StandardModel Extension  Noether’s theorem  Weyl method  Palais principle of symmetric criticality  solutions to Einstein’s equations  magnetic monopole  pulsar timing  StandardModel Extension  binary pulsars  Lorentz and CPT violation  StandardModel Extension  Dirac fermions  Dirac neutrinos  Majorana neutrinos  determinants of block matrices  lorentz violation  CPT violation  penning trap  quantum mechanics  antimatter  interferometry  gravitational waves  Lorentz violation  standardmodel extension  geodesic deviation  Lorentz violation  standard model extension  CPT violation
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The four volumes of the proceedings of MG14 give a broad view of all aspects of gravitational physics and astrophysics, from mathematical issues to recent observations and experiments. The scientific program of the meeting included 35 morning plenary talks over 6 days, 6 evening popular talks and 100 parallel sessions on 84 topics over 4 afternoons.Volume A contains plenary and review talks ranging from the mathematical foundations of classical and quantum gravitational theories including recent developments in string theory, to precision tests of general relativity including progress towards the detection of gravitational waves, and from supernova cosmology to relativistic astrophysics, including topics such as gamma ray bursts, black hole physics both in our galaxy and in active galactic nuclei in other galaxies, and neutron star, pulsar and white dwarf astrophysics.The remaining volumes include parallel sessions which touch on dark matter, neutrinos, Xray sources, astrophysical black holes, neutron stars, white dwarfs, binary systems, radiative transfer, accretion disks, quasars, gamma ray bursts, supernovas, alternative gravitational theories, perturbations of collapsed objects, analog models, black hole thermodynamics, numerical relativity, gravitational lensing, large scale structure, observational cosmology, early universe models and cosmic microwave background anisotropies, inhomogeneous cosmology, inflation, global structure, singularities, chaos, EinsteinMaxwell systems, wormholes, exact solutions of Einstein's equations, gravitational waves, gravitational wave detectors and data analysis, precision gravitational measurements, quantum gravity and loop quantum gravity, quantum cosmology, strings and branes, selfgravitating systems, gamma ray astronomy, cosmic rays and the history of general relativity.
General Relativity  Gravitation  Astrophysics  Quantum Gravity  Cosmology  Theoretical Physics  String Theory  Gravitational Wave  Gamma Ray Burst  Black Hole  Active Galactic Nuclei  Neutron Star  Pulsar  White Dwarf  Dark Matter  Neutrinos  Xray Sources  Binary Systems  Radiative Transfer  Accretion Disks  Supernova  Black Hole Thermodynamics  Numerical Relativity  Gravitational Lensing  Large Scale Structure  Observational Cosmology  Early Universe Models  Cosmic Microwave Background Anisotropies  Inhomogeneous Cosmology  Inflation  EinsteinMaxwell Systems  Wormholes  Exact Solutions of Einstein's Equations  Gravitational Wave Detectors and Data Analysis  Precision Gravitational Measurements  Loop Quantum Gravity  Quantum Cosmology  Cosmic Rays
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In 1978, Fred Hoyle proposed that interstellar comets carrying several viruses landed on Earth as part of the panspermia hypotheses. With respect to life, the origin of homochirality on Earth has been the greatest mystery because life cannot exist without molecular asymmetry. Many scientists have proposed several possible hypotheses to answer this longstanding LD question. Previously, Martin Gardner raised the question about mirror symmetry and broken mirror symmetry in terms of the homochirality question in his monographs (1964 and 1990). Possible scenarios for the LD issue can be categorized into (i) Earth and exoterrestrial origins, (ii) bychance and necessity mechanisms, and (iii) mirrorsymmetrical and nonmirrorsymmetrical forces as physical and chemical origins. These scenarios should involve further great amplification mechanisms, enabling a pure L or Dworld.
chirogenesis  enantiomorphism  nepheline  magmatic flow  etch figures  origin of life  biological homochirality  deracemization  superhighvelocity impact  plasma reactor  absolute asymmetric synthesis  amino acids  origin of life  amino acid handedness  nucleus–molecular coupling  chirality  circularly polarized luminescence  circular dichroism  symmetry breaking  parity violation  weak neutral current  tunneling  Z0 boson  homochirality  precision measurement  homochirality  circularly polarized light  asymmetric reaction  polymer  ?strand  hidden chirality  twofold helix  multipoint approximation  tiltchirality  high dimensional chirality  spin polarized electrons  homochirality  magnetism  prebiotic  environmental chirality  C1 and C2symmetric catalysts  chiral field (memory)  racemic field  Viedma ripening effect  Wallach’s rule  heat capacity  metalorganic framework  triethylenediamine (DABCO) molecules  racemate  Salam hypothesis  homochirality  parity violation  neutrinos  gravitation  enantiomer selfdisproportionation  SDE  achiral stationary phase  homochiral and heterochiral aggregates  chiral separation  chirality  genesis of life chirality  asymmetric autocatalysis  homochirality  chirality  asymmetric synthesis  Soai reaction  biological homochirality  enantioselective reaction  autocatalysis  origin of life  replicators  bioorganic homochirality  circularly polarized photon  spinpolarized lepton  parity violation in the weak interaction  symmetry breaking  assemblies  supramolecular chirality  homochirality  selfassembly  vortex  lipid  supramolecular assembly  symmetry breaking  homochirality
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