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Diamagnetism of nodal fermions
Amit Ghosal, Pallab Goswami, Sudip Chakravarty
Free nodal fermionic excitations are simple but interesting examples of fermionic quantum criticality in which the dynamic critical exponent , and the quasiparticles are well…
Quantum dynamics of an Ising spin-chain in a random transverse field
Xun Jia, Sudip Chakravarty
We consider an Ising spin-chain in a random transverse magnetic field and compute the zero temperature wave vector and frequency dependent dynamic structure factor numerically by u…
Competing ferromagnetism in high temperature copper oxide superconductors
Angela Kopp, Amit Ghosal, Sudip Chakravarty
The extreme variability of observables across the phase diagram of the cuprate high temperature superconductors has remained a profound mystery, with no convincing explanation of t…
Replacing energy by von Neumann entropy in quantum phase transitions
Angela Kopp, Xun Jia, Sudip Chakravarty
In the thermodynamic limit two distinct states of matter cannot be analytic continuations of each other. Classical phase transitions are characterized by non-analyticities of the f…