Browsing by Subject "Theoretical Physics"
Now showing items 120 of 23

The Coulomb branch formula for quiver moduli spaces
(2017)In recent series of works, by translating properties of multicent ered supersymmetric black holes into the language of quiver representations, we proposed a f ormula that expresses the Hodge numbers of the moduli space ... 
Effective medium theory for the conductivity of disordered metallic nanowire networks
(2016)Motivated by numerous technological applications, there is current interest in the study of the conductive properties of networks made of randomly dispersed nanowires. The sheet resistance of such networks is normally ... 
The ElectroOptical Performance of Silver Nanowire Networks
(2019)Networks of metallic nanowires have the potential to meet the needs of nextgeneration device technologies that require flexible transparent conductors. At present, there does not exist a first principles model capable of ... 
From positive geometries to a coaction on hypergeometric functions
(2020)It is well known that Feynman integrals in dimensional regularization often evaluate to functions of hypergeometric type. Inspired by a recent proposal for a coaction on oneloop Feynman integrals in dimensional regularization, ... 
Impurity invisibility in graphene: Symmetry guidelines for the design of efficient sensors
(2016)Renowned for its sensitivity to detect the presence of numerous substances, graphene is an excellent chemical sensor. Unfortunately, which general features a dopant must have in order to enter the list of substances ... 
Intersection cohomology of moduli spaces of sheaves on surfaces
(2018)We study intersection cohomology of moduli spaces of semist able vector bundles on a complex algebraic surface. Our main result relates inte rsection Poincar ́e polynomials of the moduli spaces to DonaldsonThomas ... 
MottHubbard transition and spinliquid state on the pyrochlore lattice
(2016)The pyrochlore lattice involves cornersharing tetrahedra and the resulting geometric frustration is believed to suppress any antiferromagnetic order for Mott insulators on this structure. There are nevertheless shortrange ... 
Multiple D3instantons and mock modular forms II
(2017)We analyze the modular properties of D3brane instanton correct ions to the hy permultiplet moduli space in type IIB string theory compactified on a CalabiYau threefold. In Part I, we found a necessary condition for ... 
NONCOLLINEAR MAGNETIC ORDER IN THE DOUBLE PEROVSKITES: DOUBLE EXCHANGE ON A GEOMETRICALLY FRUSTRATED LATTICE
(2013)Double perovskites (DPs) of the form A2BB′ O6 usually involve a transition metal ion, B, with a large magnetic moment, and a nonmagnetic ion B′. While many DPs are ferromagnetic, studies on the underlying model reveal the ... 
Pauli paramagnetism of cubic V3Al, CrVTiAl, and related 18electron Heusler compounds with a group13 element
(2021)Calculations suggest that ordered Heusler alloys with 18 valance electrons could exhibit a variety of unusual electronic and magnetic states that are absent in the constituent elements. They include magnetic semiconductors, ... 
Quantum heat statistics with timeevolving matrix product operators
(2021)We present a numerically exact method to compute the full counting statistics of heat transfer in nonMarkovian open quantum systems, which is based on the timeevolving matrix product operator algorithm. This approach is ... 
Spectroscopic signatures of the Mott transition on the anisotropic triangular lattice
(2014)We use a new Monte Carlo method to study the Mott transition on the anisotropictriangularlattice Hubbard model. Our real space approach accurately treats the emergence of nontrivial magnetic correlation in this frustrated ... 
Symanzik Improvement of the gradient flow in lattice gauge theories
(2015)We apply the Symanzik improvement progra mme to the 4 + 1dimensional local reformulation of the gradient flow in pure SU ( N ) lattice gauge theories. We show that the classical nature of the flow equation ... 
Synchronization in disordered oscillator lattices: Nonequilibrium phase transition for drivendissipative bosons
(2021)We show that lattices of phase oscillators with random natural frequencies undergo a transition from a desynchronized to a synchronized state for dimensions d<4. The oscillators are described by a generalization of the ... 
There are many ways to spin a photon: Halfquantization of a total optical angular momentum
(2016)The angular momentum of light plays an important role in many areas, from optical trapping to quantum information. In the usual threedimensional setting, the angular momentum quantum numbers of the photon are integers, ...