- Jason Aaron Pollack
- Postdoctoral Research Fellow
- Department of Physics and Astronomy
- University of British Columbia
- 6224 Agricultural Road
- Vancouver, BC V6T 1Z1
- jpollack@phas.ubc.ca
- CV (6/18/2018)
- S.M. Carroll, S. Leichenauer, and J. Pollack, 2013,
"A Consistent Effective Theory of Long-Wavelength Cosmological Perturbations,"
*Phys. Rev. D***90**, 023518 (2014); arXiv:1310.2920. - K.K. Boddy, S.M. Carroll, and J. Pollack, 2014,
"De Sitter Space Without Dynamical Quantum Fluctuations,"
*Found. Phys.*,**46**, 702 (2016); arXiv:1405.0298. - J. Pollack, D.N. Spergel, and P.J. Steinhardt, 2015, "Supermassive Black Holes from Ultra-Strongly Self-Interacting Dark Matter,"
*Astrophys. J.***804**, 131 (2015); arXiv:1501.00017. - N. Bao, C. Cao, S.M. Carroll, A. Chatwin-Davies, N. Hunter-Jones, J. Pollack, and G.N. Remmen, 2015, "Consistency Conditions for an AdS/MERA Correspondence,"
*Phys. Rev. D***91**, 125036 (2015); arXiv:1504.06632. - K.K. Boddy, S.M. Carroll, and J. Pollack, 2015,
"Why Boltzmann Brains Don't Fluctuate Into Existence From the De Sitter Vacuum," in K. Chamcham, J. Silk, J. Barrow, & S. Saunders (Eds.),
*The Philosophy of Cosmology*(pp. 228-240), Cambridge University Press; arXiv:1505.02780. - N. Bao, J. Pollack, and G.N. Remmen, 2015,
"Splitting Spacetime and Cloning Qubits: Linking No-Go Theorems across the ER=EPR Duality,"
*Fortschr. Phys.***63**, 705 (2015); arXiv:1506.08203. - A. Bartolotta, S.M. Carroll, S. Leichenauer, and J. Pollack, 2015,
"The Bayesian Second Law of Thermodynamics,"
*Phys. Rev. E***94**, 022102 (2016); arXiv:1508.02421. - N. Bao, J. Pollack, and G.N. Remmen, 2015,
"Wormhole and Entanglement (Non-)Detection in the ER=EPR Correspondence,"
*JHEP*,**2015**, 126; arXiv:1509.05426. - N. Bao, J. Pollack, and G.N. Remmen, 2016,
"Entanglement Conservation, ER=EPR, and a New Classical Area Theorem for Wormholes,"
*JHEP*,**2016**, 48; arXiv:1604.08217. - N. Bao, A. Bouland, A. Chatwin-Davies, J. Pollack, and H. Yuen, 2016,
"Rescuing Complementarity With Little Drama,"
*JHEP*,**2016**, 26; arXiv:1607.05141. - K.K. Boddy, S.M. Carroll, and J. Pollack, 2016, "How Decoherence Affects the Probability of Slow-Roll Eternal Inflation,"
*Phys. Rev. D***96**, 023539 (2017); arXiv:1612.04894. - N. Bao, S.M. Carroll, A. Chatwin-Davies, J. Pollack, and G.N. Remmen, 2017, "Branches of the Black Hole Wave Function Need Not Contain Firewalls,"
*Phys. Rev. D***97**, 126014 (2018); arXiv:1712.04955. - J. Pollack and A. Singh, 2018, "Towards Space from Hilbert Space: Finding Lattice Structure in Finite-Dimensional Quantum Systems,"
*Quantum Stud.: Math. Found*(2018); arXiv:1801.10168. - A. Bartolotta, N. Yunger Halpern, and J. Pollack, 2018, "Reconciling two notions of quantum operator disagreement: Entropic uncertainty relations and information scrambling, united through quasiprobabilities,",
*Communications Physics*, accepted: arXiv:1806.04147. - N. Bao, A. Chatwin-Davies, J. Pollack, and G.N. Remmen, 2018, "Traversable Wormholes as Quantum Channels: Exploring CFT Entanglement Structure and Channel Capacity in Holography,"
*JHEP*,**2018**, 71; arXiv:1808.05963. - F.M. Haehl, E. Mintun, J. Pollack, A.J. Speranza, and M. Van Raamsdonk, 2019, "Nonlocal multi-trace sources and bulk entanglement in holographic conformal field theories,"
*JHEP*, submitted; arXiv:1904.01584. - N. Bao, A. Chatwin-Davies, J. Pollack, and G.N. Remmen, 2019, "Towards a Bit Threads Derivation of Holographic Entanglement of Purification,"
*JHEP*, submitted; arXiv:1905.04317. - Constraints on Cosmology and Quantum Gravity from Quantum Mechanics and Quantum Field Theory, 2017 (advisor: Sean Carroll)
- Undergraduate Fall Junior Paper: Dynamical Selection of the Cosmological 'Constant' in the Cyclic Model, 2011 (advisor: Paul Steinhardt)
- Undergraduate Spring Junior Paper: Parameter Estimation of Selected ACT Clusters from X-Ray and Radio Observations, 2012 (advisor: Lyman Page)
- Undergraduate Senior Thesis: Supermassive Black Holes from Gravothermal Collapse of Fractional Self-Interacting Dark Matter Halos, 2012 (advisor: Paul Steinhardt)

I am a postdoctoral research fellow in Mark Van Raamsdonk's group at the University of British Columbia. My research is conducted at the intersection between cosmology and particle physics, with a focus on early-universe cosmology and quantum gravity.

The bulk of my recent work has been devoted to exploiting our knowledge of the general structure of quantum-mechanical and quantum field theories to draw specifically cosmological conclusions. By taking seriously the idea that the universe can be described as a quantum state in a Hilbert space, we can constrain the observations experienced by an observer contained within any such state. One particularly promising approach has been to apply tools from the decoherence program, which describes how classical behavior can emerge from subsystems of pure quantum states, to the particular case where the quantum state in question is the universe as a whole. Another is to determine the implications of information-theoretic constraints that apply to all quantum-mechanical states for the classical geometries that some of them describe.

From 2012-2017, I was a graduate student in the Caltech Particle Theory Group, in the Department of Physics. My advisor was Sean Carroll. I was previously an undergraduate at Princeton University, where I did my senior thesis research with Paul Steinhardt.