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Density-dependent nuclear interactions and the beta decay of 14C: chiral three-nucleon forces and Brown-Rho scaling
Effective field theory at finite density chiral three-nucleon force Brown-Rho scaling
2011/1/7
We study the role of density-dependent low-momentum nucleon-nucleon interactions in describing the anomalously long beta decay lifetime of 14C. We approach this problem both from the perspective of ch...
Retrograde Hot Jupiters from Secular Planet-Planet Interactions
Retrograde Hot Jupiters Secular Planet-Planet Interactions
2010/11/15
The search for extra-solar planets has led to the surprising discovery of many Jupiter-like planets in very close proximity to their host star1, the so-called “hot Jupiters.”
First-principles modeling of the interactions of iron impurities with graphene and graphite
First-principles modeling of the interactions graphene graphite
2010/11/19
Results of first principles modelling of interactions graphene and graphite with iron
impurities predict the colossal difference between these two carbon allotropes. Insertion
of the iron atoms betw...
Challenges for Modeling Nuclear Structure: Are the Proton and Neutron Masses and A-body Interactions Relevant?
Modeling Nuclear Structure A-body Interactions Relevant
2011/1/7
We discuss some of the challenges that future nuclear modeling may face in order to improve the description of the nuclear structure. One challenge is related to the need for A-body nuclear interactio...
Non-perturbative predictions for cold atom Bose gases with tunable interactions
Non-perturbative predictions for cold atom Bose gases tunable interactions
2010/11/19
We derive a theoretical description for dilute Bose gases as a loop expansion in terms of composite- eld propagators by rewriting the Lagrangian in terms of auxiliary elds related to the normal and a...
Singular continuous spectrum of one-dimensional Schrödinger operator with point interactions on a sparse set
Singular continuous spectrum one-dimensional Schrö dinger operator
2010/11/18
We say that a discrete set $X =\{x_n\}_{n\in\dN_0}$ on the half-line $$0=x_0 < x_1 infty$$ is sparse in the case the distances $\Delta x_n = x_{n+1} -x_n$ between neighboring p...
Exciton-Plasmon Interactions in Individual Carbon Nanotubes
Carbon nanotubes Near-field effects Excitons Plasmons
2010/11/18
We use the macroscopic quantum electrodynamics approach suitable for absorbing and dispersing media to study the properties and role of collective surface excitations — excitons and plasmons — in sing...
The interactions of winds from massive young stellar objects
interactions of winds massive young stellar objects
2010/11/10
The supersonic stellar and disk winds possessed by massive young stellar objects will produce
shocks when they collide against the interior of a pre-existing bipolar cavity (resulting from an earlier...
Particle-Number Projected Hartree-Fock-Bogoliubov Study with Effective Shell Model Interactions
Particle-Number Projected Hartree-Fock-Bogoliubov Study Effective Shell Model Interactions
2011/1/7
We perform particle-number projected mean-field study using the recently developed symmetryprojected Hartree-Fock-Bogoliubov (HFB) equations. Realistic calculations have been performed in sd- and fp-s...
Interactions between sub-10 nm iron and cerium oxide nanoparticles and 3T3 fibroblasts : the role of the coating and aggregation state
Nanoparticle Magnetism Cell proliferation Cell viability Fibroblast Polyacrylic acid
2010/11/19
Recent nanotoxicity studies revealed that the physico-chemical characteristics of engineered nanomaterials play an important role in the interactions with living cells. Here, we report on the toxicity...
Confinement-induced p-wave resonances from s-wave interactions
Confinement-induced p-wave resonances s-wave interactions
2011/1/7
We show that a purely s-wave interaction in three dimensions (3D) can induce higher partialwave
resonances in mixed dimensions. We develop two-body scattering theories in all three cases of
0D-3D.
Higher Spins and Open Strings: Quartic Interactions
Higher Spins Open Strings Quartic Interactions
2010/12/22
We analyze quartic gauge-invariant interactions of massless higher spin fields by using vertex operators constructed in our previous works and computing their four-point amplitudes in superstring the...
Efficient Computation of Casimir Interactions between Arbitrary 3D Objects with Arbitrary Material Properties
Efficient Computation Casimir Interactions Arbitrary 3D Objects Arbitrary Material Properties
2010/11/9
We extend a recently introduced method for computing Casimir forces between arbitrarily--shaped metallic objects [M. T. H. Reid et al., Phys. Rev. Lett._103_ 040401 (2009)] to allow treatment of objec...
The role of asymmetric interactions on the effect of habitat destruction in mutualistic networks
asymmetric interactions effect habitat destruction mutualistic networks
2010/11/15
Plant-pollinator mutualistic networks are asymmetric in their interactions: specialist plants are pollinated by generalist animals, while generalist plants are pollinated by a broad involving speciali...
Structures and Assumptions: Strategies to Harness Gene $\times$ Gene and Gene $\times$ Environment Interactions in GWAS
Structures Assumptions Strategies Harness Gene $\times$ Gene Gene $\times$ Environment Interactions in GWAS
2010/11/16
Genome-wide association studies, in which as many as a million single nucleotide polymorphisms (SNP) are measured on several thousand samples, are quickly becoming a common type of study for identify...