Browsing Department of Physics by Title
Now showing items 5-24 of 1825
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The A-dependence of pion absorption in the energy region of the [delta](1232) resonance
(Massachusetts Institute of Technology, 1995) -
Ab initio statistical mechanics of structural phase transitions
(Massachusetts Institute of Technology, 1987) -
Ab initio studies of semiconductors : defects, surfaces and interfaces
(Massachusetts Institute of Technology, 1996) -
Ab initio study of magnetic effects at material interfaces .
(Massachusetts Institute of Technology, 2003)Fairly little is known from a fundamental first principles level about the role of magnetism at material interfaces. This thesis will address (a) changes in spin density at grain boundaries and surfaces; (b) the impact of ... -
Ab initio study of the Si(111)-(7x7) surface reconstruction : a challenge for massively parallel computation
(Massachusetts Institute of Technology, 1993) -
Absorption spectroscopy using optical masers including a discussion of early investigations into the process of stimulated emission of radiation
(Massachusetts Institute of Technology, 1963) -
Accelerator-based boron neutron capture therapy
(Massachusetts Institute of Technology, 1997) -
Accelerator-Based Neutron Branchytherapy
(Massachusetts Institute of Technology, 1998)The feasibility of a new modality of radiation therapy, Accelerator-Based Neutron Brachytherapy (ABNBT), has been demonstrated through simulations and experimental work. The candidate nuclear reactions investigated are ... -
Accretion flows and neutron star heating in low-mass X-ray binaries
(Massachusetts Institute of Technology, 2017)X-ray binaries are excellent test beds for studies of high-energy accretion flows and the properties of compact objects. Neutron star (NS) low-mass X-ray binaries (LMXBs) vary in brightness by almost 8 orders of magnitude ... -
The accretion process in neutron-star low-mass X-ray binaries
(Massachusetts Institute of Technology, 2009)There had been long-standing fundamental problems in the spectral studies of accreting neutron stars (NSs) in low-mass X-ray binaries involving the X-ray spectral decomposition, the relations between subtypes (mainly atoll ... -
Accuracy and precision in collider event shapes
(Massachusetts Institute of Technology, 2016)In order to gain a deeper understanding of the Standard Model of particle physics and test its limitations, it is necessary to carry out accurate calculations to compare with experimental results. Event shapes provide a ... -
An accurate analytical framework for computing fault-tolerance thresholds using the [[7,1,3]] quantum code
(Massachusetts Institute of Technology, 2005)In studies of the threshold for fault-tolerant quantum error-correction, it is generally assumed that the noise channel at all levels of error-correction is the depolarizing channel. The effects of this assumption on the ... -
Accurate pyrometry inside an arc furnace by taking into account the surface emissivity with a ray-tracing analysis
(Massachusetts Institute of Technology, 1996) -
An acoustic means of detecting an electron-proton charge difference.
(Massachusetts Institute of Technology, 1971) -
Acoustics in moving media
(Massachusetts Institute of Technology, 1959) -
An action principle for dissipative fluid dynamics
(Massachusetts Institute of Technology, 2016)Fluid dynamics is the universal theory of low-energy excitations around equilibrium states, governing the physics of long-lived modes associated with conserved charges. Historically, fluid dynamics has been formulated at ... -
Active materials in photonic crystals
(Massachusetts Institute of Technology, 2007)I analyze new phenomena arising from embedding active materials inside of photonic crystal structures. These structures strongly modify the photonic local density of states (LDOS), leading to quantitative and qualitative ... -
Active wavefront correction in laser interferometric gravitational wave detectors
(Massachusetts Institute of Technology, 2003)As the first generation of laser interferometric gravitational wave detectors near operation, research and development has begun on increasing the instrument's sensitivity while utilizing existing infrastructure. In the ... -
Activity and kinematics of low mass stars
(Massachusetts Institute of Technology, 2010)We present an analysis of the magnetic activity, photometry and kinematics of approximately 70000 M dwarfs from the Sloan digital Sky Survey (SDSS) Data Release 7. This new analysis explores the spatial distribution of ... -
Advancing the search for dark matter : from CDMS II to SuperCDMS
(Massachusetts Institute of Technology, 2012)An overwhelming proportion of the universe (83% by mass) is composed of particles we know next to nothing about. Detecting these dark matter particles directly, through hypothesized weak-force-mediated recoils with nuclear ...
