110 citations · 849 across the 52 of their papers we have counts for
53 papers
Unified Hydrodynamic Analogue of Aharonov-Bohm and Lense-Thirring Effects
Aditya Singh, Joseph Samuel, Chien-chia Liu +3
We show that surface waves in a draining-bathtub vortex provide a hydrodynamic realization of both Aharonov-Bohm phase shifts and Lense-Thirring frame dragging within a single syst…
Born-Oppenheimer and the Geometry of Ray Space
Joseph Samuel
It is known that, within the Born-Oppenheimer approximation, the slow modes of the nuclear motion are altered by three effects that emerge from integrating out the fast modes of th…
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…
Invariants in Co-polar Interferometry: an Abelian Gauge Theory
Nithyanandan Thyagarajan, Rajaram Nityananda, Joseph Samuel
An -element interferometer measures correlations among pairs of array elements. Closure invariants associated with closed loops among array elements are immune to multiplicative…
Coadjoint orbits and Kähler structure: examples from coherent states
Rukmini Dey, Joseph Samuel, Rithwik S. Vidyarthi
Do co-adjoint orbits of Lie groups support a Kähler structure? We study this question from a point of view derived from coherent states. We examine three examples of Lie groups: th…
Of Light and Shadows: Raychaudhuri's equation, the Big Bang and Black Holes
Joseph Samuel
Einstein's genius and penetrating physical intuition led to the general theory of relativity, which incorporates gravity into the geometry of spacetime. However, the theory of gene…