30 citations · 82 across the 10 of their papers we have counts for
10 papers
New non-perturbative de Sitter vacua in -complete cosmology
Carmen A. Núñez, Facundo Emanuel Rost
The -complete cosmology developed by Hohm and Zwiebach classifies the invariant theories involving metric, -field and dilaton that only depend on…
Spin texture in weak topological insulators: the role of bulk states and band bending
F. Rost, R. Gupta, S. Sharma +2
We derive the spin texture of a weak topological insulator via a supersymmetric approach that includes the roles of the bulk gap edge states and surface band bending. We find the s…
Bulk-to-surface misorientation and the spin texture of topological insulators
N. Klier, F. Rost, R. Gupta +3
Weak topological insulators possess a symmetry related set of Dirac-Weyl cones in the surface Brillouin zone, implying misorientation between the principle axis of the low energy m…
A general relation between stacking order and Chern index: a topological map of minimally twisted bilayer graphene
S. Theil, M. Fleischmann, R. Gupta +4
We derive a general relation between the stacking vector describing the relative shift of two layers of bilayer graphene and the Chern index. We find $C = ν- \text{sign}\…
Deformation induced pseudo-magnetic fields in complex carbon architectures
R. Gupta, S. Maisel, F. Rost +6
We show that the physics of deformation in -, -, and -graphyne is, despite their significantly more complex lattice structures, remarkably close to that of graphene,…
A non-perturbative theory of effective Hamiltonians: example of moiré materials
F. Rost, R. Gupta, M. Fleischmann +7
We demonstrate that there exists a continuum Hamiltonian that is formally the operator equivalent of the general tight-binding method, inheriting the associativi…
Dislocation and node states in bilayer graphene systems
D. Weckbecker, R. Gupta, F. Rost +2
We investigate the electronic structure of realistic partial dislocation networks in bilayer graphene that feature annihilating, wandering, and intersecting partial lines. We find…
Straintronics beyond homogeneous deformation
R. Gupta, F. Rost, M. Fleischmann +2
We present a continuum theory of graphene treating on an equal footing both homogeneous Cauchy-Born (CB) deformation, as well as the microscopic degrees of freedom associated with…
Tuning topological surface magnetism by bulk alloying
N. Klier, S. Sharma, O. Pankratov +1
Deploying an analytical atomistic model of the bulk band structure of the IV-VI semiconductors we connect the spin structure of the topological surface state to the crystal field a…
Going beyond k.p theory: a general method for obtaining effective Hamiltonians in both high and low symmetry situations
N. Ray, F. Rost, D. Weckbecker +5
We provide a method for the generation of effective continuum Hamiltonians that goes beyond the well known k.p method in being equally effective in both high, and low (or no) symme…