Past Events

  • 2018 Oct 23

    Jeremy Butterfield (Trinity College, Cambridge UK) & Chelsea McLeod (CFA)

    1:30pm to 2:30pm

    Location: 

    BHI conference Room: 20 Garden Street, Cambridge (Lunch will be served at 1:00 pm)

    Jeremy Butterfield, Trinity College, Cambridge UK

    Title: Peaceful coexistence: examining Kent’s relativistic solution to the quantum measurement problem

    Abstract: I aim to advertise Adrian Kent's realist one-world Lorentz-invariant interpretation of quantum theory (as in his 1311.0249, 1411.2957, 1608.04805). The overarching question hereabouts is whether there can be `peaceful coexistence' between quantum theory and special relativity? Thirty years ago, Shimony hoped that...

    Read more about Jeremy Butterfield (Trinity College, Cambridge UK) & Chelsea McLeod (CFA)
  • 2018 Oct 16

    Peter Boorman and Chris Fragile

    1:30pm to 2:30pm

    Location: 

    BHI Conference Room 20, 20 Garden Street, Cambridge (Lunch will be served at 1pm).

    Peter Boorman, University of South Hampton UK

    Title: Constructing a Census of Growing Supermassive Black Holes - First Results from the NuLANDS Survey

    Abstract: Very little is known about how black holes at the centres of galaxies grow to become “super" massive. Sensitive X-ray observations have enabled studies of the closest regions to growing supermassive black holes (aka Active Galactic Nuclei - AGN) and have revealed the majority are obscured by gas. Unfortunately, though, the most...

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  • 2018 Oct 09

    Michal Bejger, PAS and Rivka Bekenstein, CFA

    1:30pm to 2:30pm

    Location: 

    BHI conference Room: 20 Garden Street, Cambridge (Lunch will be served at 1:00 pm)

    Michal Bejger, Nicolaus Copernicus Astronomical Center, PAS

    Title: Collisions of neutron stars with primordial black holes as fast radio bursts engines

    Abstract: If light primordial black holes constitute a non-negligible fraction of the galactic dark-matter haloes, their existence should have observable consequences: they necessarily collide with galactic neutron stars, nest in their centers and accrete the dense matter, eventually converting them to neutron-star mass black holes while...

    Read more about Michal Bejger, PAS and Rivka Bekenstein, CFA
  • 2018 Oct 02

    Monica Pate and Zhong-Zhi Xianyu, Harvard Physics

    1:30pm to 2:30pm

    Location: 

    BHI conference Room: 20 Garden Street, Cambridge (Lunch will be served at 1:00 pm)

    Monica Pate, Harvard Physics

    Title: "Gravitational Memory in Higher Dimensions"

    Abstract: A precise equivalence among Weinberg's soft graviton theorem, supertranslation conservation laws and the gravitational memory effect was previously established in theories of asymptotically flat gravity in four dimensions. Moreover, this triangle of equivalence was proposed to be a universal feature of generic theories of gauge and gravity. In theories of gravity in even dimensions greater than four, we show...

    Read more about Monica Pate and Zhong-Zhi Xianyu, Harvard Physics
  • 2018 Sep 25

    Robert Penna, Columbia and Kazu Akiyama, Haystack Observatory

    1:30pm

    Location: 

    BHI conference Room: 20 Garden Street, Cambridge (Lunch will be served at 1:00 pm)

    Robert Penna, Columbia University

    Title: Characters of sphere diffeomorphisms

    Abstract: Diffeomorphism groups act as infinite-dimensional symmetry groups in fluid dynamics and general relativity. We consider the group of area-preserving diffeomorphisms of the two-sphere, SDiff(S^2), and compute characters of irreducible representations. Physically, the characters encode a wealth of information about the distribution of states and eigenvalues of quantum systems with SDiff(S^2)...

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  • 2018 Sep 18

    Peter Schor, MIT & Dom Pesce, SAO

    1:30pm

    Location: 

    BHI conference Room: 20 Garden Street, Cambridge (Lunch will be served at 1:00 pm)

    Peter Schor, MIT

    Title: Scrambling Time and Causal Structure of the Photon Sphere of a Schwarzschild Black Hole

    Abstract: The fast scrambling conjecture says that black holes are the fastest scramblers of information, and that they scramble it in time order M Log M, where M is the mass of the black hole in natural units. We point out that the scrambling time depends on the exact definition of scrambling and give an argument that for the stronger...

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  • 2018 Sep 11

    Colloquium Series with Shuo Zhang and Jan Schee

    1:30pm to 2:30pm

    Location: 

    BHI Conference Room 2nd Floor, 20 Garden Street, Cambridge (Lunch will be served at 1pm).

    Two talks are scheduled for Tuesday, September 11:

    A Brief History of the Galactic Center Supermassive Black Hole Sgr A*

    Supermassive black holes (SMBHs) may spend the majority of their lives accreting at low rates through radiatively inefficient, advection-dominated accretion flow. Therefore, low-luminosity SMBHs could greatly outnumber their more active cousins, the active galactic nuclei (AGN), thus are essential for our understanding of SMBH activity cycles and their relationship to galaxy evolution. In particular, SMBHs harbored at...

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  • 2018 Sep 04

    What Exciting new Discoveries did you make this summer?

    1:30pm to 2:30pm

    Location: 

    BHI conference Room: 20 Garden Street, Cambridge (Lunch will be served at 1:00 pm)
    Director of the BHI, Avi Loeb will have an informal talk with members of the BHI community on new research and current ideas.
  • 2018 May 09

    Rainer Weiss to speak at BHI Conference Banquet May 9, 2018

    6:00pm

    Location: 

    Sheraton Commander Hotel

     

    Winning the Nobel Prize would cap most physicists’ careers. For 2017 winner Rainer Weiss, the prize might not even have been the biggest moment of his year.

    The 85-year-old professor emeritus at MIT shared the Nobel Prize for Physics for conceiving and shepherding a set of observatories that allowed scientists to prove Einstein’s assertion about gravitational waves: accelerating objects send ripples cascading through the universe at light speed. The invisible waves are so faint that even the most powerful distort space-time by less than the width of a human...

    Read more about Rainer Weiss to speak at BHI Conference Banquet May 9, 2018

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