6 papers
Textured phase diagrams of featureless insulators
Sashank Singam, Nick G. Jones, Abhishodh Prakash
We study phase diagrams of charge-conserving `class A' non-interacting fermions, focusing on the trivial phase in various dimensions. Such phases are usually termed `featureless' t…
Reflections on time-reversal in the Symmetry Topological Field Theory
Lea E. Bottini, Nick G. Jones
Symmetry under time-reversal appears in the microscopic description of many physical systems. In a quantum mechanical setting it acts as an anti-unitary operator, so does not fall…
Matrix-product operator dualities in integrable lattice models
Yuan Miao, Andras Molnar, Nick G. Jones
Matrix-product operators (MPOs) appear throughout the study of integrable lattice models, notably as the transfer matrices. They can also be used as transformations to construct du…
Charge pumps, pivot Hamiltonians and symmetry-protected topological phases
Nick. G. Jones, Ryan Thorngren, Ruben Verresen +1
Generalised charge pumps are topological obstructions to trivialising loops in the space of symmetric gapped Hamiltonians. We show that given mild conditions on such pumps, the ass…
Pivoting through the chiral-clock family
Nick G. Jones, Abhishodh Prakash, Paul Fendley
The Onsager algebra, invented to solve the two-dimensional Ising model, can be used to construct conserved charges for a family of integrable -state chiral clock models. We show…
Classical origins of Landau-incompatible transitions
Abhishodh Prakash, Nick G. Jones
Continuous phase transitions where symmetry is spontaneously broken are ubiquitous in physics and often found between `Landau-compatible' phases where residual symmetries of one ph…