Past Events

The Space Weather Operational Readiness Development (SWORD) Center: a new NASA center of excellence at CU

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The Space Weather Operational Readiness Development (SWORD) Center is a new international, multi-disciplinary focal point where space weather researchers, operational forecasters, industry partners, and the space weather community will collaborate on transformative research to improve forecasts and nowcasts of the orbital and cis-lunar space environment. SWORD is led by Tom Berger out of CU’s Space Weather Technology, Research, and Education Center (SWx TREC) with major contributions from LASP Co-Investigators.

Single molecule ligand binding kinetics and environmental adaptations in lysine riboswitches

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Abstract: Riboswitches are important RNA structures in bacteria and some eukaryotes that can bind a ligand to toggle between conformations that allow or terminate transcription, translation, or splicing. We study folding kinetics and thermodynamics in the B. subtilis and T. maritima lysine riboswitches via single molecule TIRF microscopy. We show that riboswitch folding is exothermic with a large entropic cost, which we attribute to increased binding pocket rigidity upon lysine binding.

Fun With Ultracold Molecules

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Abstract: Many experiments worldwide, and some in this building, can create gasses at ridiculously low temperatures.  Our group thinks a lot about how these novel substances are different from ordinary gases. In this talk, I will share a few of these differences with you.
 

TBA

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Butcher Auditorium, A115, JSCBB 3415 Colorado Ave, Boulder, CO 80303

Mental Health Day

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Happy Mental Health Day! We encourage folks to take a break from work and join us for a mindfulness exercise open to all JILAns. We will also be sharing some wonderful local mental health resources. 

Cleaning up the dusty universe with JWST and ALMA

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Abstract: About half the light ever emitted by stars over the course of the history of the universe was absorbed by interstellar dust and re-radiated at long wavelengths. Dust-rich galaxies, extremely faint in visible light images, are the sites of intense starbursts that can rapidly assemble and then cut short the growth of the earliest generations of massive galaxies.

Semi-Classical Physics at Large Quantum Numbers

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Lunch is provided at 12:00 pm before the talk.

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Abstract:  In recent years it has been shown that strongly coupled many body systems become analytically tractable in the regime of large quantum numbers, such as large spin or large charge. We will review these developments and present applications to the theory of critical exponents.

 

Theory of free fermions under random projective measurements

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Abstract:  We develop a theory of measurement-induced phase transitions (MIPT) for d-dimensional lattice free fermions subject to random projective measurements of local site occupation numbers. Our analytical approach is based on the Keldysh path-integral formalism and replica trick. In the limit of rare measurements, \gamma << J (where \gamma is measurement rate per site and J is hopping constant), we derive a non-linear sigma model (NLSM) as an effective field theory of the problem.

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