6 papers
Hidden Magnon Berry Curvature drives Vertical Magnon Transport
Atul Rathor, Sahanawaj Akhtar, Arijit Haldar
We predict an in-plane, or hidden, Berry curvature (BC) for magnons in electrically insulating quasi-2D magnets and demonstrate that the hidden magnon Berry curvature (HMBC) gives…
Spin Injection Route to Magnon Berry Curvature Dipole
Atul Rathor, Saurav Kantha, Arijit Haldar
Berry curvature of Bloch bands arising in lattice systems can induce a Hall response even in the absence of topology due to the so-called Berry-curvature dipole (BCD). Such a respo…
Disorder operators and magnetic vortices in SU(N) lattice gauge theory
Manu Mathur, Atul Rathor
We construct the most general disorder operator for SU(N) lattice gauge theory in dimension by using exact duality transformations. These disorder operators, defined on the…
Spin Networks, Wilson Loops and 3nj Wigner Identities
Manu Mathur, Atul Rathor
We exploit the spin network properties of the magnetic eigenstates of SU(2) Hamiltonian lattice gauge theory and use the Wilson loop operators to obtain a wide class of new identit…
Exact duality and local dynamics in SU(N) lattice gauge theory
Manu Mathur, Atul Rathor
We construct exact duality transformations in pure SU(N) Hamiltonian lattice gauge theory in (2+1) dimension. This duality is obtained by making a series of iterative canonical tra…
Resolution of SU(3) Outer Multiplicity Problem and the Invariant Group
Manu Mathur, Atul Rathor, T. P. Sreeraj
We resolve the SU(3) outer multiplicity problem by defining all possible invariant operators in terms of SU(3) Schwinger bosons. We show that the elementary in…