107 citations · 273 across the 11 of their papers we have counts for
11 papers
Aspects of Hilbert space fragmentation in the quantum East model: fragmentation, subspace-restricted quantum scars, and effects of density-density interactions
Maitri Ganguli, Sreemayee Aditya, Diptiman Sen
We investigate a one-dimensional correlated-hopping model of spinless fermions with an East constraint. We first analytically unravel the complete fragmentation structure of this m…
Subspace restricted thermalization in a correlated-hopping model with strong Hilbert space fragmentation characterized by irreducible strings
Sreemayee Aditya, Deepak Dhar, Diptiman Sen
We introduce a one-dimensional correlated-hopping model of spinless fermions in which a particle can hop between two neighboring sites only if the sites to the left and right of th…
Electric field tunable edge transport in Bernal stacked trilayer graphene
Saurabh Kumar Srivastav, Adithi Udupa, K. Watanabe +3
This letter presents a non-local study on the electric field tunable edge transport in an hBN-encapsulated dual-gated Bernal stacked (ABA) trilayer graphene across various displace…
Mechanisms of scrambling and unscrambling of quantum information in the ground state in spin chains: domain-walls, spin-flips and scattering phase shifts
Samudra Sur, Diptiman Sen
The spatiotemporal evolution of the out-of-time-order correlator (OTOC) measures the propagation and scrambling of local quantum information. For the transverse field Ising model w…
Quantum bound states for a derivative nonlinear Schrodinger model and number theory
B. Basu-Mallick, Tanaya Bhattacharyya, Diptiman Sen
A derivative nonlinear Schrodinger model is shown to support localized N-body bound states for several ranges (called bands) of the coupling constant eta. The ranges of eta within…
Novel multi-band quantum soliton states for a derivative nonlinear Schrodinger model
B. Basu-Mallick, Tanaya Bhattacharyya, Diptiman Sen
We show that localized N-body soliton states exist for a quantum integrable derivative nonlinear Schrodinger model for several non-overlapping ranges (called bands) of the coupling…
Field theoretical study of a spin-1/2 ladder with unequal chain exchanges
Sujit Sarkar, Diptiman Sen
We study the low-energy properties of a Heisenberg spin-1/2 zigzag ladder with different exchange constants on the two chains. Using a nonlinear sigma-model field theory and abelia…
Comment on ``Low-dimensional Bose liquids: beyond the Gross-Pitaevskii approximation''
R. K. Bhaduri, Diptiman Sen
This is a comment on the work of Kolomeisky et al., Phys. Rev. Lett. 85, 1146 (2000). We point out that they are using the wrong form of the energy functional for one-dimensional f…
Transport through quasi-ballistic quantum wires: the role of contacts
Siddhartha Lal, Sumathi Rao, Diptiman Sen
We model one-dimensional transport through each open channel of a quantum wire by a Luttinger liquid with three different interaction parameters for the leads, the contact regions…
On Quantum Solitons in the Sawtooth Lattice
Diptiman Sen, B. Sriram Shastry, R. E. Walstedt +1
We study the sawtooth lattice of a coupled spin Heisenberg system, a variant of the railroad trestle lattice. The ground state of this system is two-fold degenerate with peri…
Large- limit of a Hubbard model in a magnetic field: chiral spin interactions and paramagnetism
Diptiman Sen, R. Chitra
We consider the large- limit of the one-band Hubbard model at half-filling on a non-bipartite two-dimensional lattice. An external magnetic field can induce a three-spin chiral…