Constraining gravity with hadron physics: neutron stars, modified gravity and gravitational waves
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2017
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E D P Sciences
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Abstract
The finding of Gravitational Waves (GW) by the aLIGO scientific and VIRGO collaborations opens opportunities to better test and understand strong interactions, both nuclear-hadronic and gravitational. Assuming General Relativity holds, one can constrain hadron physics at a neutron star. But precise knowledge of the Equation of State and transport properties in hadron matter can also be used to constrain the theory of gravity itself. I review a couple of these opportunities in the context of modified f(R) gravity, the maximum mass of neutron stars, and progress in the Equation of State of neutron matter from the chiral effective field theory of QCD.
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© The Authors, published by EDP Sciences. Conference on Quark Confinement and the Hadron Spectrum (12th. 2016. Thessaloniki, Greece). This presentation was needed to cover such exciting developments at the plenary of the ConfinementXII conference; as convener of its QCD and New Physics section E, I substituted for more qualified speakers, all previously engaged. My gratitude for their endless work is due to the organizers, and more so to those with which I directly interacted in solving all daily challenges: E. Andronov, Y. Foka, A. Katanaeva, V. Kovalenko, M. Janik; and especially to Nora Brambilla for keeping this forum open over the years. Thanks are due also to my fellow conveners, particularly M. Gersabeck and E. Mereghetti. Work supported by grants UCM: 910309 and MINECO: FPA2014-53375-C2-1-P.