• Date:13WednesdayDecember 201714ThursdayDecember 2017

    Studying Complex Behaviour- A Dr. Daniel Andreae Symposium

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    Time
    08:00 - 08:00
    Location
    David Lopatie Conference Centre
    Kimmel Auditorium
    Chairperson
    Alon Chen
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  • Date:13WednesdayDecember 2017

    “Observational Constraints on Dissipative Dark Matter”

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    Time
    10:45
    Location
    Edna and K.B. Weissman Building of Physical Sciences
    Auditorium
    Lecturer
    Eric David Kramer
    Hebrew Univ
    Organizer
    Department of Particle Physics and Astrophysics
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    DetailsShow full text description of 10:45 Coffee 12:15 Lunch...»
    10:45 Coffee
    12:15 Lunch
    AbstractShow full text abstract about Abstract: A recent direction in dark matter phenomenology ...»

    Abstract: A recent direction in dark matter phenomenology has been to consider multi-component dark matter, containing subsectors with interesting interactions and structure. These include models where part of dark matter is dissipative. In these particular models, the dissipative subsector will cool to form a dark matter disk, whose size, density, and temperature can be predicted from the parameters of the model. I will discuss details of the model and of the disk formation process, as well as various observational constraints and possible evidence for such a disk. I will also discuss potential astrophysical constraints from recent Gaia data, and under what assumptions these constraints should be taken seriously.

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  • Date:13WednesdayDecember 2017

    Machine Learning and Statistics Seminar

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    Time
    11:15 - 12:30
    Title
    Overcoming Intractability in Learning
    Location
    Jacob Ziskind Building
    Room 1
    Lecturer
    Roi Livni
    Princeton
    Organizer
    Faculty of Mathematics and Computer Science, Department of Computer Science and Applied Mathematics, Department of Mathematics
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  • Date:13WednesdayDecember 2017

    “A direct calculation of the lifetime of false vacua”

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    Time
    13:00
    Location
    Edna and K.B. Weissman Building of Physical Sciences
    Auditorium
    Lecturer
    Dr.Ryosuke Sato
    WIS
    Organizer
    Department of Particle Physics and Astrophysics
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    AbstractShow full text abstract about Abstract: The lifetime of false vacua can be calculated by C...»
    Abstract: The lifetime of false vacua can be calculated by Coleman's semiclassical method. This method implicitly uses a deformation of the potential. I will discuss an alternative approach to the calculation of the
    lifetime of the false vacua.

    References:
    Direct Approach to Quantum Tunneling
    Anders Andreassen, David Farhi, William Frost, Matthew D. Schwartz
    Published in Phys.Rev.Lett. 117 (2016) no.23, 231601
    e-Print: arXiv:1602.01102 [hep-th]

    Precision decay rate calculations in quantum field theory
    Anders Andreassen, David Farhi, William Frost, Matthew D. Schwartz
    Published in Phys.Rev. D95 (2017) no.8, 085011
    e-Print: arXiv:1604.06090 [hep-th]
    Lecture