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8 papers · 2 filters
A Matrix Model for QCD
A. P. Balachandran, Sachindeo Vaidya, Amilcar R. de Queiroz
Gribov's observation that global gauge fixing is impossible has led to suggestions that there may be a deep connection between gauge-fixing and confinement. We find an unexpected r…
How Well Can We Really Determine the Scale of Inflation?
Ogan Özsoy, Kuver Sinha, Scott Watson
A detection of primordial B-modes has been heralded not only as a smoking gun for the existence of inflation, but also as a way to establish the scale at which inflation took place…
General Covariance Constraints on Cosmological Correlators
Cristian Armendariz-Picon, Jayanth T. Neelakanta, Riccardo Penco
We study the extent to which diffeomorphism invariance restricts the properties of the primordial perturbations in single scalar field models. We derive a set of identities that co…
A Matrix Model for QCD: QCD Colour is Mixed
A. P. Balachandran, Amilcar de Queiroz, Sachindeo Vaidya
We use general arguments to show that coloured QCD states when restricted to gauge invariant local observables are mixed. This result has important implications for confinement: a…
A semi perturbative method for QED
Renata Jora, Joseph Schechter
We compute the QED beta function using a new method of functional integration. It turns out that in this procedure the beta function contains only the first two orders coefficients…
Spontaneous Lorentz Violation: The Case of Infrared QED
A. P. Balachandran, S. Kurkcuoglu, A. R. de Queiroz +1
It is by now clear that infrared sector of QED has an intriguingly complex structure. Based on earlier pioneering works on this subject, two of us recently proposed a simple modifi…