# Events

#### High Energy Theory Seminar- IAS - Masanori Hanada, Kyoto U.-“Toward Numerical Experiments of Quantum Gravity via Gauge/Gravity Duality”

##### Sep 15, 2014 · 2:30 p.m.– 3:30 p.m. · Bloomberg Lecture Hall - Institute for Advanced Study

#### Math Physics Seminar, Frank Hansen, "Regular operator mappings and multivariate geometric means"

##### Sep 16, 2014 · 4:30 p.m.– 5:30 p.m. · Jadwin 343

We introduce the notion of regular operator mappings of several variables generalising the notion of spectral function. This setting is convenient for studying maps more general than what can be obtained from the functional calculus, and it allows for Jensen type inequalities and multivariate non-commutative perspectives.

As a main application of the theory we consider geometric means of k operator va riables extending the geometric mean of k commuting operators and the geometric mean of two arbitrary positive definite matrices. We propose different types of updating conditions that seems natural in many applications and prove that each of these conditions, together with a few other natural axioms, uniquely defines the geometric mean for any number of operator variables. The means defined in this way are given by explicit formulas and are computationally tractable.

#### Hamilton Colloquium Series - Thomas Gregor, Princeton, "Precision and reproducibility in development"

##### Sep 18, 2014 · 4:30 p.m.– 6:00 p.m. · Jadwin A10

Identical body plans across a species result from precise and reproducible embryonic development. However, the environment for developmental processes can be quite variable, and crucial signals inside the embryo are carried by so few molecules that we might expect development to be noisy. It is thus unclear how precision is achieved along the developmental path. Should we imagine that every step in the process is sloppy, so that the result is reproducible only because of error correction mechanisms? Or might each step be more reliable than previously intuited, squeezing as much information as possible out of a limited number of molecules? Using the fruit fly as a model system, our recent work shows that from the macroscopic features of the body plan, precision can be traced, through several steps, back to the counting of essential signaling molecules placed in the egg by the mother. Absolute concentrations of molecules are reproducible to better than 10%, which translates to a spatial accuracy in a developing embryo sufficient to distinguish each cell from its neighbor, arguably the highest precision that the organism could achieve. These results argue for an evolutionary design principle by which developmental systems operate near

#### High Energy Theory Seminar- Kristan Jensen, Stony Brook, TBA

##### Sep 22, 2014 · 2:30 p.m.– 3:30 p.m. · PCTS Seminar Room

#### High Energy Theory Seminar- IAS - Anton Kapustin, Caltech; Simons Center for Geometry and Physics, Stony Brook, TBA

##### Sep 29, 2014 · 2:30 p.m.– 3:30 p.m. · Bloomberg Lecture Hall - Institute for Advanced Study

#### Hamilton Colloquium Series- David Huse, Princeton University, "Quantum thermalization, many-body Anderson localization, and the entanglement frontier"

##### Oct 2, 2014 · 4:30 p.m.– 6:00 p.m. · Jadwin A10

Abstract: TBA

#### High Energy Theory Seminar- Mirjam Cvetic, U. of Pennsylvania, TBA

##### Oct 6, 2014 · 2:30 p.m.– 3:30 p.m. · PCTS Seminar Room

#### High Energy Theory Seminar- IAS - Greg Moore, Rutgers, The State University of New Jersey, TBA

##### Oct 13, 2014 · 2:30 p.m.– 3:30 p.m. · Bloomberg Lecture Hall - Institute for Advanced Study

#### Hamilton Colloquium Series - Michael Gordin, Dept. of History, Princeton, "Title: TBA"

##### Oct 16, 2014 · 4:30 p.m.– 6:00 p.m. · Jadwin A10

Abstract: TBA

#### High Energy Theory Seminar- IAS - Andrew Strominger, Harvard University, TBA

##### Oct 27, 2014 · 2:30 p.m.– 3:30 p.m. · Bloomberg Lecture Hall - Institute for Advanced Study

#### High Energy Theory Seminar- Emanuel Katz, Boston U., TBA

##### Nov 3, 2014 · 2:30 p.m.– 3:30 p.m. · PCTS Seminar Room

#### Hamilton Colloquium Series - Slava Rychkov, CERN, "Title: TBA"

##### Nov 6, 2014 · 4:30 p.m.– 6:00 p.m. · Jadwin A10

Abstract: TBA

#### Hamilton Colloquium Series - Eva Halkiadakis, Rutgers University, "Title: TBA"

##### Nov 13, 2014 · 4:30 p.m.– 6:00 p.m. · Jadwin A10

Abstract: TBA

#### High Energy Theory Seminar- Jennifer Lin U. of Chicago, TBA

##### Nov 17, 2014 · 2:30 p.m.– 3:30 p.m. · PCTS Seminar Room

#### High Energy Theory Seminar- IAS - Joao Gomes, TBA

##### Nov 24, 2014 · 2:30 p.m.– 3:30 p.m. · Bloomberg Lecture Hall - Institute for Advanced Study

#### High Energy Theory Seminar- Clay Cordova, Harvard, TBA

##### Dec 1, 2014 · 2:30 p.m.– 3:30 p.m. · PCTS Seminar Room

#### Condensed Matter Seminar, Nicolas Regnault, TBA

##### Dec 8, 2014 · 1:15 p.m.– 2:30 p.m. · PCTS Seminar Room

TBA