Physics and Astronomy
Recent Submissions

Quasispecies theory for evolution of modularity
(2015)Biological systems are modular, and this modularity evolves over time and in different environments. A number of observations have been made of increased modularity in biological systems under increased environmental ... 
Improved Cellular Specificity of Plasmonic Nanobubbles versus Nanoparticles in Heterogeneous Cell Systems
(2012)The limited specificity of nanoparticle (NP) uptake by target cells associated with a disease is one of the principal challenges of nanomedicine. Using the threshold mechanism of plasmonic nanobubble (PNB) generation and ... 
Polyradical Character and Spin Frustration in Fullerene Molecules: An Ab Initio NonCollinear Hartree–Fock Study
(2014)Most ab initio calculations on fullerene molecules have been carried out on the basis of the paradigm of the Hückel model. This is consistent with the restricted nature of the independentparticle model underlying such ... 
Lie algebraic similarity transformed Hamiltonians for lattice model systems
(2015)We present a class of Lie algebraic similarity transformations generated by exponentials of twobody onsite Hermitian operators whose Hausdorff series can be summed exactly without truncation. The correlators are defined ... 
Solutions of the TwoDimensional Hubbard Model: Benchmarks and Results from a Wide Range of Numerical Algorithms
(2015)Numerical results for groundstate and excitedstate properties (energies, double occupancies, and Matsubaraaxis selfenergies) of the singleorbital Hubbard model on a twodimensional square lattice are presented, in ... 
Variational description of the ground state of the repulsive twodimensional Hubbard model in terms of nonorthogonal symmetryprojected Slater determinants
(2014)The fewdeterminant (FED) methodology, introduced in our previous works [R. RodríguezGuzmán et al., Phys. Rev. B 87, 235129 (2013); Phys. Rev. B 89, 195109 (2014)] for onedimensional (1D) lattices, is here adapted for ... 
Symmetryprojected wave functions in quantum Monte Carlo calculations
(2014)We consider symmetryprojected HartreeFock trial wave functions in constrainedpath Monte Carlo (CPMC) calculations. Previous CPMC calculations have mostly employed HartreeFock (HF) trial wave functions, restricted or ... 
Quasiparticle coupled cluster theory for pairing interactions
(2014)We present an extension of the pair coupled cluster doubles (pCCD) method to quasiparticles and apply it to the attractive pairing Hamiltonian. Near the transition point where number symmetry gets spontaneously broken, ... 
Multireference symmetryprojected variational approximation for the ground state of the doped onedimensional Hubbard model
(2014)The few determinant (FED) approximation introduced in our previous work [Phys. Rev. B 87, 235129 (2013)] is used to describe the ground state, characterized by welldefined spin and space group symmetry quantum numbers as ... 
Density matrix embedding from broken symmetry lattice mean fields
(2014)Several variants of the recently proposed density matrix embedding theory (DMET) [G. Knizia and G. KL. Chan, Phys. Rev. Lett. 109, 186404 (2012)] are formulated and tested. We show that spin symmetry breaking of the lattice ... 
Sign problem in full configuration interaction quantum Monte Carlo: Linear and sublinear representation regimes for the exact wave function
(2014)We investigate the sign problem for full configuration interaction quantum Monte Carlo (FCIQMC), a stochastic algorithm for finding the groundstate solution of the Schrödinger equation with substantially reduced computational ... 
Cytotoxicity and variant cellular internalization behavior of watersoluble sulfonated nanographene sheets in liver cancer cells
(2013)Highly exfoliated sulfonated graphene sheets (SGSs), an alternative to graphene oxide and graphene derivatives, were synthesized, characterized, and applied to liver cancer cells in vitro. Cytotoxicity profiles were obtained ... 
Fluctuating mobility generation and transport in glasses
(2013)In the context of the random first order transition theory we use an extended mode coupling theory of the glass transition that includes activated events to account for spatiotemporal structures in rejuvenating glasses. ... 
High Chromaticity Aluminum Plasmonic Pixels for Active Liquid Crystal Displays
(2016)Chromatic devices such as flat panel displays could, in principle, be substantially improved by incorporating aluminum plasmonic nanostructures instead of conventional chromophores that are susceptible to photobleaching. ... 
Learning physics of living systems from Dictyostelium
(2014)Unlike a new generation of scientists that are being trained directly to work on the physics of living systems, most of us more senior members of the community had to find our way from other research areas. We all have our ... 
Energy dependence of the spin excitation anisotropy in uniaxialstrained BaFe1.9Ni0.1As2
(2015)We use inelastic neutron scattering to study the temperature and energy dependence of the spin excitation anisotropy in uniaxialstrained electrondoped iron pnictide BaFe1.9Ni0.1As2 near optimal superconductivity (Tc=20K). ... 
CancerRelated NEET Proteins Transfer 2Fe2S Clusters to Anamorsin, a Protein Required for Cytosolic IronSulfur Cluster Biogenesis
(2015)Ironsulfur cluster biogenesis is executed by distinct protein assembly systems. Mammals have two systems, the mitochondrial FeS cluster assembly system (ISC) and the cytosolic assembly system (CIA), that are connected ... 
Modeling the Transitions between Collective and Solitary Migration Phenotypes in Cancer Metastasis
(2015)Cellular plasticity during cancer metastasis is a major clinical challenge. Two key cellular plasticity mechanisms —EpithelialtoMesenchymal Transition (EMT) and MesenchymaltoAmoeboid Transition (MAT) – have been carefully ... 
Intermediate valence to heavy fermion through a quantum phase transition in Yb3(Rh1−xTx)4Ge13 (T=Co,Ir) single crystals
(2016)Single crystals of Yb3(Rh1−xTx)4Ge13 (T=Co,Ir) have been grown using the selfflux method. Powder xray diffraction data on these compounds are consistent with the cubic structure with space group Pm3¯n. Intermediatevalence ... 
From tunable coreshell nanoparticles to plasmonic drawbridges: Active control of nanoparticle optical properties
(2015)The optical properties of metallic nanoparticles are highly sensitive to interparticle distance, giving rise to dramatic but frequently irreversible color changes. By electrochemical modification of individual nanoparticles ...