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Browsing MIT Open Access Articles by Issue Date

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  • Cui, Tiangang; Marzouk, Youssef M.; Willcox, Karen E. (Wiley Blackwell, 2015-08)
    One of the major challenges in the Bayesian solution of inverse problems governed by partial differential equations (PDEs) is the computational cost of repeatedly evaluating numerical PDE models, as required by Markov chain ...
  • Park, Hae won; Wensing, Patrick M.; Kim, Sangbae (2015-07)
    This paper presents a new framework for the generation of high-speed running jumps to clear terrain obstacles in quadrupedal robots. Our methods enable the quadruped to autonomously jump over obstacles up to 40 cm in height ...
  • Wan, Yidun; He, Huan; Wang, Juven (American Physical Society, 2015-07)
    We propose an exactly solvable lattice Hamiltonian model of topological phases in 3+1 dimensions, based on a generic finite group G and a 4-cocycle ω over G. We show that our model has topologically protected degenerate ...
  • Jin, X. Y.; Gudmundsen, T.; Miloshi, J.; Yan, F.; Kamal, Archana; Sears, Adam P.; Hover, David J.; Slattery, Richard L.; Yoder, Jonilyn Longenecker; Orlando, Terry Philip; Gustavsson, Simon; Oliver, William D. (American Physical Society, 2015-06)
    Remarkable advancements in coherence and control fidelity have been achieved in recent years with cryogenic solid-state qubits. Nonetheless, thermalizing such devices to their milliKelvin environments has remained a ...
  • Wang, Chong (American Physical Society, 2015-06)
    We propose a simple theoretical construction of certain short-range entangled phases of interacting fermions, by putting the bound states of three fermions (which we refer to as clustons) into topological bands. We give ...
  • Liao, Bolin; Zhou, Jiawei; Qiu, Bo; Chen, Gang; Dresselhaus, Mildred (American Physical Society, 2015-06)
    The monolayer of black phosphorus, or “phosphorene,” has recently emerged as a two-dimensional semiconductor with intriguing highly anisotropic transport properties. Existing calculations of its intrinsic phonon-limited ...
  • Mao, Yunwei; Li, Ju; Lo, Yu-Chieh; Qian, Xiaofeng; Ma, Evan (American Physical Society, 2015-06)
    At elevated temperatures, glasses crystallize via thermally activated diffusion. However, metallic glasses can also undergo deformation-induced crystallization at very low temperatures. Here we demonstrate the crystallization ...
  • Akcay, Sarp; Le Tiec, Alexandre; Barack, Leor; Sago, Norichika; Warburton, Niels J. (American Physical Society, 2015-06)
    The gravitational self-force (GSF) and post-Newtonian (PN) schemes are complementary approximation methods for modeling the dynamics of compact binary systems. Comparison of their results in an overlapping domain of validity ...
  • Marzani, Simone; Thaler, Jesse; Larkoski, Andrew James (American Physical Society, 2015-06)
    Traditional calculations in perturbative quantum chromodynamics (pQCD) are based on an order-by-order expansion in the strong coupling α[subscript s]. Observables that are calculable in this way are known as “safe.” Recently, ...
  • Pick, A.; Cerjan, A.; Rodriguez, A. W.; Stone, A. D.; Chong, Y. D.; Liu, David; Johnson, Steven G. (American Physical Society, 2015-06)
    We present a multimode laser-linewidth theory for arbitrary cavity structures and geometries that contains nearly all previously known effects and also finds new nonlinear and multimode corrections, e.g., a correction to ...
  • Beane, S. R.; Chang, E.; Cohen, S. D.; Lin, H.-W.; Orginos, K.; Savage, M. J.; Detmold, William; Parreno, A. (American Physical Society, 2015-06)
    Quarkonium-nucleus systems are composed of two interacting hadronic states without common valence quarks, which interact primarily through multigluon exchanges, realizing a color van der Waals force. We present lattice QCD ...
  • Cline, James M.; Dupuis, Grace; Liu, Zuowei; Xue, Wei (American Physical Society, 2015-06)
    Tentative evidence for excess GeV-scale gamma rays from the Galactic Center has been corroborated by several groups, including the Fermi collaboration, on whose data the observation is based. Dark matter annihilation into ...
  • Detmold, William (American Physical Society, 2015-06)
    We derive generalizations of the Weingarten-Witten QCD mass inequalities for particular multihadron systems. For systems of any number of identical pseudoscalar mesons of maximal isospin, these inequalities prove that near ...
  • Aminov, Avi; Kafri, Yariv; Kardar, Mehran (American Physical Society, 2015-06)
    Fluctuations in nonequilibrium steady states generically lead to power law decay of correlations for conserved quantities. Embedded bodies which constrain fluctuations, in turn, experience fluctuation induced forces. We ...
  • Bacon, Dave; Flammia, Steven T.; Harrow, Aram W.; Shi, Jonathan (Association for Computing Machinery (ACM), 2015-06)
    Sparse quantum codes are analogous to LDPC codes in that their check operators require examining only a constant number of qubits. In contrast to LDPC codes, good sparse quantum codes are not known, and even to encode a ...
  • Inam, Wardah; Strawser, Daniel DeWitt; Afridi, Khurram K.; Ram, Rajeev J.; Perreault, David J. (2015-06)
    More than 1.3 billion people in the world lack access to electricity and this energy poverty is a major barrier to human development. This paper describes a new concept of peer-to-peer electricity sharing which creates a ...
  • Bylinskii, Alexei; Gangloff, Dorian; Vuletic, Vladan (American Association for the Advancement of Science (AAAS), 2015-06)
    Friction between ordered, atomically smooth surfaces at the nanoscale (nanofriction) is often governed by stick-slip processes. To test long-standing atomistic models of such processes, we implemented a synthetic nanofriction ...
  • Lu, Ling; Ketterle, Wolfgang; Buljan, Hrvoje; Dubcek, Tena; Kennedy, Colin; Soljacic, Marin (American Physical Society, 2015-06)
    We show that a Hamiltonian with Weyl points can be realized for ultracold atoms using laser-assisted tunneling in three-dimensional optical lattices. Weyl points are synthetic magnetic monopoles that exhibit a robust, ...
  • Qian, Xiaofeng; Umari, Paolo; Marzari, Nicola (American Physical Society, 2015-06)
    We present a first-principles investigation of the excited-state properties of electron acceptors in organic photovoltaics including C[subscript 60], C[subscript 70], [6,6]-phenyl-C[subscript 61]-butyric-acid-methyl-ester ...
  • Vijay, Sagar; Fu, Liang (American Physical Society, 2015-06)
    We study the entanglement spectrum of a translationally invariant lattice system under a random partition, implemented by choosing each site to be in one subsystem with probability p ∈ [0,1]. We apply this random partitioning ...
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