Events List

DateEvent TypeSpeaker
01/15/2019Informal Astro TalkCornelius Rampf [ -- ]

Title: Weak singularities in large-scale structure: identification and workaround
Description: The large-scale structure of the universe is mostly the consequence of the gravitational clustering of cold dark matter (CDM). Eventually the CDM trajectories begin to intersect ("shell-crossing"), which marks the starting point of elaborate computations in the phase-space. I show that, due to the collisionless nature of CDM, phase-space trajectories exhibit weakly singular behaviour such as local non-differentiability of the particle acceleration. Conventional N-body simulations should be able to handle these features of CDM. Alternatively, singular features may be regulated by employing semiclassical descriptions for the large-scale structure which I will briefly discuss. (2:00 PM - 2:30 PM, 726 Broadway, 940, CCPP Seminar)
01/15/2019Thesis Seminar DefenseKillian Walsh [ + ]
01/18/2019NYU-CCANYU-CCA [ + ]
01/28/2019CCPP Brown BagJoshua Ruderman [ + ]
01/29/2019CQP Faculty SearchMatteo Mitrano [ + ]
01/29/2019Astro SeminarEly Kovetz [ + ]
01/30/2019HEP SeminarVladimir Rosenhaus [ + ]