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Mingling of the infrared and ultraviolet and the “cosmological constant” for interacting QFT in 2d
Published 2023-05-01“…Abstract We propose a proper definition of the vacuum expectation value of the stress energy tensor 〈0| T μν | 0〉 for integrable quantum field theories in two spacetime dimensions, which is the analog of the cosmological constant in 4d. …”
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1182
Which Quantum Theory Must be Reconciled with Gravity? (And What Does it Mean for Black Holes?)
Published 2016-10-01“…We consider the nature of quantum properties in non-relativistic quantum mechanics (QM) and relativistic quantum field theories, and examine the connection between formal quantization schemes and intuitive notions of wave-particle duality. …”
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1183
Lieb-Schultz-Mattis anomalies and web of dualities induced by gauging in quantum spin chains
Published 2024-01-01“…LSM theorems have recently been interpreted as the lattice counterparts to mixed 't Hooft anomalies in quantum field theories that arise from a combination of crystalline and global internal symmetry groups. …”
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1184
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Matter in transition
Published 2016“…We explore a novel type of transition in certain 6D and 4D quantum field theories, in which the matter content of the theory changes while the gauge group and other parts of the spectrum remain invariant. …”
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1187
The connection between nonzero density and spontaneous symmetry breaking for interacting scalars
Published 2023-09-01“…Abstract We consider U(1)-symmetric scalar quantum field theories at zero temperature. At nonzero charge densities, the ground state of these systems is usually assumed to be a superfluid phase, in which the global symmetry is spontaneously broken along with Lorentz boosts and time translations. …”
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1188
Supersymmetric geometries in string theory
Published 2021“…The objective of this thesis is to study two classes of supersymmetric geometries and their associated quantum field theories arising from string compactifications.…”
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