10 citations · 13 across the 4 of their papers we have counts for
5 papers
Spacetime Dynamics of Altermagnetic Magnons
Ali Emami Kopaei, Karthik Subramaniam Eswaran, Krzysztof Wohlfeld
Distinguishing altermagnetism from conventional ferromagnetism and antiferromagnetism typically relies on momentum-space probes. Here, we show that the real-space spreading of a lo…
Aspects of quantum geometry in photonic time crystals
Karthik Subramaniam Eswaran, Ali Emami Kopaei, Krzysztof Sacha
We develop a geometric description of quantum light in photonic time crystals on the SU(1,1) coherent-state manifold. In a projective picture, the evolution of each mode appears as…
Anderson Localization in Photonic Time Crystals
Karthik Subramaniam Eswaran, Ali Emami Kopaei, Krzysztof Sacha
Solutions of the wave equations for time-independent disordered media can exhibit Anderson localization where instead of wave propagation we observe their localization around diffe…
Towards Timetronics with Photonic Systems
Ali Emami Kopaei, Karthik Subramaniam Eswaran, Arkadiusz Kosior +5
Periodic driving of particles can create crystalline structures in their dynamics. Such systems can be used to study solid-state physics phenomena in the time domain. In addition,…
Equivalence of nonequilibrium ensembles: Two-dimensional turbulence with a dual cascade
Kannabiran Seshasayanan, Karthik Subramaniam Eswaran, Maheswar Maji +2
We examine the conjecture of equivalence of nonequilibrium ensembles for turbulent flows in two-dimensions (2D) in a dual-cascade setup. We construct a formally time-reversible Nav…