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Browsing MIT Open Access Articles by Title

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  • Barkeshli, Maissam; McGreevy, John (American Physical Society, 2012-08)
    One of the most successful theories of a non-Fermi-liquid metallic state is the composite Fermi-liquid (CFL) theory of the half-filled Landau level. In this paper, we study continuous quantum phase transitions out of the ...
  • Lupo, Cosmo; Lloyd, Seth (American Physical Society, 2015-12)
    Quantum physics allows for unconditionally secure communication through insecure communication channels. The achievable rates of quantum-secured communication are fundamentally limited by the laws of quantum physics and ...
  • Cerf, Nicolas J.; Garcia-Patron Sanchez, Raul (American Physical Society, 2009-03)
    A continuous-variable quantum key distribution protocol based on squeezed states and heterodyne detection is introduced and shown to attain higher secret key rates over a noisy line than any other one-way Gaussian protocol. ...
  • Rumpler, Joseph J.; Fonstad, Clifton G., Jr. (Institute of Electrical and Electronics Engineers, 2009-06)
    We report the successful integration on silicon of small footprint, low-threshold electrically pumped edge-emitting lasers by a new approach incorporating microcleaving technology to produce 6-mum-thick platelet lasers ...
  • Torrezan de Sousa, Antonio Carlos; Han, Seong-Tae; Mastovsky, Ivan; Shapiro, Michael; Sirigiri, Jagadishwar R.; Temkin, Richard J.; Barnes, Alexander; Griffin, Robert Guy (Institute of Electrical and Electronics Engineers / IEEE Nuclear and Plasma Sciences Society, 2010-06)
    The design, operation, and characterization of a continuous-wave (CW) tunable second-harmonic 460-GHz gyrotron are reported. The gyrotron is intended to be used as a submillimeter-wave source for 700-MHz nuclear magnetic ...
  • Huang, Hsin-Fu; Zahn, Markus; Lemaire, Elisabeth (Elsevier, 2010-05)
    A continuum mechanical model is presented to analyze the negative electrorheological responses of a particle-liquid mixture with the suspended micro-particles undergoing Quincke rotation for both Couette and Poiseuille ...
  • Henann, David Lee; Kamrin, Kenneth N. (American Physical Society, 2014-10)
    Recent dense granular flow experiments have shown that shear deformation in one region of a granular medium fluidizes its entirety, including regions far from the sheared zone, effectively erasing the yield condition ...
  • Dunatunga, Sachith Anurudde; Kamrin, Kenneth N (Cambridge University Press, 2015-08)
    We propose and numerically implement a constitutive framework for granular media that allows the material to traverse through its many common phases during the flow process. When dense, the material is treated as a ...
  • Schlaufman, Kevin C. (Institute of Physics/American Astronomical Society, 2015-01)
    It has long been known that stars with high metallicity are more likely to host giant planets than stars with low metallicity. Yet the connection between host star metallicity and the properties of small planets is only ...
  • Pinto, Pedro C.; Win, Moe Z. (Institute of Electrical and Electronics Engineers, 2010-10)
    The intrinsically secure communications graph (iS-graph) is a random graph which captures the connections that can be securely established over a large-scale network, in the presence of eavesdroppers. It is based on ...
  • Hutchinson, Ian H.; Patacchini, Leonardo (American Institute of Physic, 2009-06)
    The classical problem of the interaction of a nonemitting spherical body with a zero mean-free-path continuum plasma is solved numerically in the full range of physically allowed free parameters (electron Debye length to ...
  • Fritscher, Karl; Sharp, Greg; Wachinger, Christian; Golland, Polina (Institute of Electrical and Electronics Engineers (IEEE), 2015-12)
    We propose new methods for automatic segmentation of images based on an atlas of manually labeled scans and contours in the image. First, we introduce a Bayesian framework for creating initial label maps from manually ...
  • Schramm, Oded; Sheffield, Scott Roger (Springer-Verlag, 2012-09)
    Consider an instance h of the Gaussian free field on a simply connected planar domain D with boundary conditions −λ on one boundary arc and λ on the complementary arc, where λ is the special constant √π/8 . We argue that ...
  • Bathe, Mark; Zhou, Zhou; Munteanu, Emilia Laura; He, Jun; Ursell, Tristan; Huang, Kerwyn Casey; Chang, Fred (American Society for Cell Biology, 2014-10)
    The functions of the actin-myosin–based contractile ring in cytokinesis remain to be elucidated. Recent findings show that in the fission yeast Schizosaccharomyces pombe, cleavage furrow ingression is driven by polymerization ...
  • Demaine, Erik D.; Hajiaghayi, Mohammad Taghi; Kawarabayashi, Ken-ichi (Association for Computing Machinery (ACM), 2011-06)
    We prove that any graph excluding a fixed minor can have its edges partitioned into a desired number k of color classes such that contracting the edges in any one color class results in a graph of treewidth linear in k. ...
  • Guth, Lawrence (Springer-Verlag, 2013-08)
    We construct homotopically non-trivial maps from S[superscript m] to S[superscript m−1] with arbitrarily small k-dilation for each k > [(m + 1) over 2]. We prove that homotopically non-trivial maps from S[superscript m] ...
  • Szell, Michael; Ratti, Carlo; Grauwin, Sebastian (Public Library of Science, 2014-02)
    Quantifying regularities in behavioral dynamics is of crucial interest for understanding collective social events such as panics or political revolutions. With the widespread use of digital communication media it has become ...
  • Del Vecchio, Domitilla; Slotine, Jean-Jacques E. (Institute of Electrical and Electronics Engineers (IEEE), 2011-12)
    In this paper, we revisit standard results for singularly perturbed systems on the infinite time interval by employing tools from nonlinear contraction theory. This allows us to determine explicit bounds both on the rate ...
  • Slotine, Jean-Jacques E.; Pham, Quang-Cuong; Tabareau, Nicolas (Institute of Electrical and Electronics Engineers, 2009-04)
    We investigate the incremental stability properties of Ito stochastic dynamical systems. Specifically, we derive a stochastic version of nonlinear contraction theory that provides a bound on the mean square distance between ...
  • Bonnabel, Silvere; Slotine, Jean-Jacques E. (Institute of Electrical and Electronics Engineers (IEEE), 2015-01)
    The contraction properties of the extended Kalman filter, viewed as a deterministic observer for nonlinear systems, are analyzed. The approach relies on the study of an auxiliary “virtual” dynamical system. Some conditions ...
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