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Flexible spectral algorithms for simulating astrophysical and geophysical flows
(Massachusetts Institute of Technology, 2018)
Large-scale numerical simulations are key to studying the complex physical systems that surround us. Simulations provide the ability to perform simplified numerical experiments to build our understanding of large-scale ...
High-resolution studies of charge exchange in supernova remnants with Magellan, XMM-Newton, and Micro-X
(Massachusetts Institute of Technology, 2014)
Charge exchange, the semi-resonant transfer of an electron from a neutral atom to an excited state in an energetic ion, can occur in plasmas where energetic ions are incident on a cold, at least partially neutral gas. ...
CHAOS, holography, and other science
(Massachusetts Institute of Technology, 2016)
This thesis focuses on the relationship between black holes in holography, chaos in strongly-coupled quantum systems, and the computational complexity of holographic states. By directly considering the time evolution of ...
21 cm cosmology with optimized instrumentation and algorithms
(Massachusetts Institute of Technology, 2016)
Precision cosmology has made tremendous progress in the past two decades thanks to a large amount of high quality data from the Cosmic Microwave Background (CMB), galaxy surveys and other cosmological probes. However, most ...
It's always darkest before the cosmic dawn : early results from novel tools and telescopes for 21 cm cosmology
(Massachusetts Institute of Technology, 2015)
21 cm cosmology, the statistical observation of the high redshift universe using the hyperfine transition of neutral hydrogen, has the potential to revolutionize our understanding of cosmology and the astrophysical processes ...
Strong proton-photon interactions at the single-photon level
(Massachusetts Institute of Technology, 2015)
Engineering light at the single photon level is a long-standing goal in physics. In this thesis, we investigate optical nonlinearities at the single photon level orchestrated by an optical cavity. We demonstrate an all-optical ...
Charge transport in nanopatterned PbS colloidal quantum dot arrays
(Massachusetts Institute of Technology, 2015)
In this thesis, we study charge transport in nanopatterned arrays of PbS colloidal quantum dots using conventional two-probe measurements and an integrated charge sensor. PbS dots are synthesized in solution with an organic ...
The radiance of the gluon spin : constraining the proton spin structure with the direct photon double helicity asymmetry
(Massachusetts Institute of Technology, 2012)
Although fundamental to the observable universe, the proton is not elementary. Rather the particle is a bound state of three valence quarks and the QCD vacuum that condenses around them, its properties an amalgamation of ...
Electron tunneling and spin relaxation in a lateral quantum dot
(Massachusetts Institute of Technology, 2008)
We report measurements that use real-time charge sensing to probe a single-electron lateral quantum dot. The charge sensor is a quantum point contact (QPC) adjacent to the dot and the sensitivity is comparable to other ...
The ground state of the spin-1/2 kagomé lattice antiferromagnet : neutron scattering studies of the zinc-paratacamite mineral family
(Massachusetts Institute of Technology, 2009)
The magnetic properties of the geometrically frustrated quantum magnets clinoatacamite, Cu2(OH)3Cl, and herbertsmithite, ZnCu3(OH)6Cl2, are studied by means of neutron scattering measurements as well as specific heat, ...