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New York City, NY, United States

New York City College of Technology , commonly known as City Tech, is the largest four-year public college of technology in the northeastern United States, and a constituent college of the City University of New York. It is one of four CUNY senior colleges to grant both associate and bachelor degrees along with The College of Staten Island, Medgar Evers College, and John Jay College. Wikipedia.

Lu H.,Beijing Normal University | Vazquez-Poritz J.F.,New York City College of Technology
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2015

We construct an exact time-dependent charged dilaton C metric in four-dimensional N=4 gauged supergravity. The scalar field drives the time evolution by transferring energy to the black holes, thereby causing their masses to increase and their acceleration to decrease. The values of the electric/magnetic and scalar charges determine three regions of potential time evolution. This solution holographically describes a strongly coupled three-dimensional conformal field theory on the background of an evolving black hole. We also find new static charged dilaton C metrics, which arise in four-dimensional Einstein-Maxwell-dilaton theories whose scalar potential can be expressed in terms of a superpotential. © 2015 American Physical Society. Source

Grigorenko I.,New York City College of Technology
Applied Physics Letters | Year: 2013

In this work, we consider fractal substrates for Surface Enhanced Raman Scattering measurements. The shape of the substrates is based on self-similar space filling Hilbert curves, which possess properties of both one dimensional and two dimensional geometries. The dielectric response of a doped semiconductor nanostructure, where conducting electrons are trapped in an effective potential having the geometry of the Hilbert curve is calculated and analysed. It is found that the system may exhibit electronic collective excitations specific for either a two dimensional or one dimensional system, depending on the excitation frequency. © 2013 AIP Publishing LLC. Source

Sirlin A.,New York University | Ferroglia A.,New York City College of Technology
Reviews of Modern Physics | Year: 2013

The aim of this article is to review the important role played by radiative corrections in precision electroweak physics, in the framework of both the Fermi theory of weak interactions and the standard theory of particle physics. Important theoretical developments, closely connected with the study and applications of the radiative corrections, are also reviewed. The role of radiative corrections in the analysis of some important signals of new physics is also discussed. © 2013 American Physical Society. Source

Gailani G.,New York City College of Technology | Cowin S.,City College of New York
Journal of the Mechanics and Physics of Solids | Year: 2011

Aporoelastic model for porous materials with a nested pore space structure is developed to represent the interstitial fluid flow in bone tissue. The nested porosity model is applied to the problem of determining the exchange of pore fluid between the vascular porosity (PV) and the lacunarcanalicular porosity (PLC) in bone tissue in a ramp loading in the case where the fluid and solid constituents are assumed to be compressible. The compressibility assumption is appropriate for hard tissues while the incompressibility assumption is appropriate for soft tissues. The influence of blood pressure in the PV is included in the analysis. A formula for the fluid that moves between the two porosities is developed. The analysis showed the coupling of the two porosities and their influence on each other and concluded that the PV pore pressure has an influence less than 3% on the PLC pore pressure while the absence of the PV pore pressure will affect the fluid exchange between the PV and PLC by less than 6% (the blood pressure range is 4060 mmHg). Also the analysis has shown that the draining time of the PLC is inversely proportional to its permeability. The significance of the result is basic to the understanding of interstitial flow in bone tissue that, in turn, is basic to understanding of nutrient transport from the vasculature to the bone cells buried in the bone tissue and to the process of mechanotransduction by these cells. © 2010 Elsevier Ltd. All rights reserved. Source

Ferroglia A.,New York City College of Technology | Sirlin A.,New York University
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2013

Assuming that the recently discovered particle at LHC is the standard theory (ST) Higgs boson, we compare the ST predictions of MW and sinâ¡2θefflept with the experimental values of these basic observables. While the sin â¡2θefflept prediction is in excellent agreement with its experimental value, that of MW shows a 1.33σ deviation. Implications of these comparisons for possible future developments at LHC and a future GigaZ linear collider are briefly discussed. It is also pointed out that these comparisons are consistent with the conjecture that the newly discovered particle is indeed the ST Higgs boson. © 2013 American Physical Society. Source

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