Proceedings of the Fourth Meeting on CPT and Lorentz Symmetry, Bloomington, USA, 8-11 August 2007 / editor, V. Alan Kostelecký.

Includes bibliographical references.

Improved tests of Lorentz and CPT symmetry using noble-gas masers / A. Glenday, D.F. Phillips, and R.L. Walsworth -- A modern Michelson-Morley experiment using actively rotated optical resonators / S. Herrmann et al. -- Rotating experiments to test Lorentz invariance in the photon sector / M.E. Tobar et al. -- Lorentz violation, electrodynamics, and the cosmic microwave background / M. Mewes -- High energy astrophysical tests of Lorentz invariance / B. Altschul -- Fundamental physics experiments in space (within ESA) / T.J. Sumner -- The experimental foundations of the Dirac equation / C. Lämmerzahl -- Perspectives on Lorentz and CPT violation / V.A. Kostelecký -- Search for Lorentz and CPT violation effects in muon spin precession / B.L. Roberts -- Lorentz violation in a diffeomorphism-invariant theory / R. Jackiw -- Studies of CPT symmetry with ASACUSA / R.S. Hayano -- Neutrino oscillations and Lorentz violation with MiniBooNE / R. Tayloe and T. Katori -- Testing Lorentz and CPT invariance with MINOS near detector neutrinos / B.J. Rebel and S.L. Mufson -- Einstein-Æther gravity: theory and observational constraints / T. Jacobson -- Tests of Lorentz-invariance violation in neutrino oscillations / K. Whisnant -- Search for CPT violation in neutral kaons at KLOE: status and perspectives / A. Di Domenico et al. -- Search for CPT violation in B[symbol]-B̄[symbol] oscillations with BABAR / D.P. Stoker -- Theoretical topics in spacetime-symmetry violations / R. Lehnert -- A second-generation co-magnetometer for testing fundamental symmetries / S.J. Smullin et al. -- Nambu-Goldstone and massive modes in gravitational theories with spontaneous Lorentz breaking / R. Bluhm -- The ALPHA antihydrogen experiment / N. Madsen et al. -- Atom interferometry tests the isotropy of post-Newtonian gravity / H. Müller et al. -- Probing Lorentz symmetry with gravitationally coupled matter / J.D. Tasson -- Torsion balance test of preferred-frame and weak coupling to polarized electrons / B.R. Heckel et al. -- Seeking a solution of the pioneer anomaly / M.M. Nieto and J.D. Anderson -- Testing Lorentz symmetry with gravity / Q.C. Bailey -- Preferred frame effects in relativistic binary pulsars / M. Kramer and N. Wex -- APOLLO: next generation lunar laser ranging / T.W. Murphy, Jr. et al. -- Constraints on Lorentz violation from gravity Probe B / J.M. Overduin -- Preliminary results from a test of CPT and Lorentz symmetry using a K-[symbol]He co-magnetometer / T.W. Kornack, G. Vasilakis, and M.V. Rornalis -- Constraining quantum gravity with GLAST / F. Kuehn, R. Hughes, and B. Winer -- Renormalization of Lorentz-violating theories / D. Anselmi -- Renormalization of gauge theories with Lorentz violation / D. Colladay and P. McDonald -- A POEM-based test of the WEP using a Sounding Rocket (SR-POEM) / R.D. Reasenberg and J.D. Phillips -- Testing alternative oscillation scenarios with atmospheric neutrinos using AMANDA-II data from 2000 to 2003 / J. Ahrens and J.L. Kelley -- Measurement of the ground-state hyperfine splitting of antihydrogen / B. Juhász and E. Widmann -- Spontaneous Lorentz violation and baryogenesis / J. Shu -- Lorentz invariance tested with fast optical ion clocks in a storage ring / G. Gwinner et al. -- Bose-Einstein condensates and Lorentz violation / D. Colladay and P. McDonald -- Embedding geometry and decomposition of gravity / T.E. Clark et al. -- The first lunar laser ranging constraints on gravity sector SME parameters / J.B.R. Battat, J.F. Chandler, and C.W. Stubbs -- A theory of gravity from Lorentz violation / R. Potting -- Search for Lorentz violation in a high-frequency gravitational experiment below 50 microns / W.A. Jensen, S.M. Lewis, and J.C. Long -- Lorentz violation and torsion / N. Russell -- Probing Lorentz invariance using coherent optical phenomena / J.P. Cotter, M.P. Hill, and B.T.H. Varcoe -- Constraint analysis of bumblebee models / N. Gagne and A. Vrublevslcis -- Ives-Stilwell for the new millennium / M.A. Nohensee, D.F. Phillips, and R.L. Walsworth -- Test for Lorentz violation in the MiniBooNE neutrino oscillation experiment / T. Katori and R. Tayloe -- Doppler-effect experiments and Lorentz violation / C.D. Lane -- Complementary Michelson-Morley experiments: coordinate and field redefinitions / H. Müller et al. -- A POEM progress report / R.D. Reasenberg and J.D. Phillips -- Data tables for Lorentz and CPT violation / V.A. Kostelecký and N. Russell.

This book contains the proceedings of the Fourth Meeting on CPT and Lorentz Symmetry, held at Indiana University in Bloomington on August 8-11, 2007. The Meeting focused on experimental tests of these fundamental symmetries and on important theoretical issues, including scenarios for possible relativity violations. Experimental subjects covered include: astrophysical observations, clock-comparison measurements, cosmological birefringence, electromagnetic resonant cavities, gravitational tests, matter interferometry, muon behavior, neutrino oscillations, oscillations and decays of neutral mesons, particle-antiparticle comparisons, post-Newtonian gravity, space-based missions, spectroscopy of hydrogen and antihydrogen, and spin-polarized matter. Theoretical topics covered include: physical effects at the level of the Standard Model, General Relativity, and beyond; the possible origins and mechanisms for Lorentz and CPT violations; and associated issues in field theory, particle physics, gravity, and string theory. Contributors consist of the leading experts in this very active research field.

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