110 citations · 849 across the 52 of their papers we have counts for
14 papers · 1 filter
Invariants in Polarimetric Interferometry: a non-Abelian Gauge Theory
Joseph Samuel, Rajaram Nityananda, Nithyanandan Thyagarajan
The discovery of magnetic fields close to the M87 black hole using Very Long Baseline Interferometry (VLBI) by the Event Horizon Telescope collaboration utilized the novel concept…
Gravity and decoherence: the double slit experiment revisited
Joseph Samuel
The double slit experiment is iconic and widely used in classrooms to demonstrate the fundamental mystery of quantum physics. The puzzling feature is that the probability of an ele…
Boundary and Corner Terms in the Action for General Relativity
Ian Jubb, Joseph Samuel, Rafael Sorkin +1
We revisit the action principle for general relativity motivated by the path integral approach to quantum gravity. We consider a spacetime region whose boundary has piecewise …
Wick Rotation in the Tangent Space
Joseph Samuel
Wick rotation is usually performed by rotating the time coordinate to imaginary values. In a general curved spacetime, the notion of a time coordinate is ambiguous. We note here, t…
Quantum Limit on Stability of Clocks in a Gravitational Field
Supurna Sinha, Joseph Samuel
Good clocks are of importance both to fundamental physics and for applications in astronomy, metrology and global positioning systems. In a recent technological breakthrough, resea…
Atom Interferometers and the Gravitational Redshift
Supurna Sinha, Joseph Samuel
From the principle of equivalence, Einstein predicted that clocks slow down in a gravitational field. Since the general theory of relativity is based on the principle of equivalenc…