Entanglement in indistinguishable particle systems
For systems consisting of distinguishable particles, there exists an agreed upon notion of
entanglement which is fundamentally based on the possibility of addressing individually …
entanglement which is fundamentally based on the possibility of addressing individually …
Does provable absence of barren plateaus imply classical simulability? Or, why we need to rethink variational quantum computing
A large amount of effort has recently been put into understanding the barren plateau
phenomenon. In this perspective article, we face the increasingly loud elephant in the room …
phenomenon. In this perspective article, we face the increasingly loud elephant in the room …
Measures of complexity and entanglement in many-fermion systems
There is no unique and widely accepted definition of the complexity measure (CM) of a
many-fermion wave function in the presence of interactions. The simplest many-fermion …
many-fermion wave function in the presence of interactions. The simplest many-fermion …
Nuclear shell-model simulation in digital quantum computers
The nuclear shell model is one of the prime many-body methods to study the structure of
atomic nuclei, but it is hampered by an exponential scaling on the basis size as the number …
atomic nuclei, but it is hampered by an exponential scaling on the basis size as the number …
Entanglement rearrangement in self-consistent nuclear structure calculations
Background: Entanglement plays a central role in a diverse array of increasingly important
research areas, including quantum computation, simulation, measurement, sensing, and …
research areas, including quantum computation, simulation, measurement, sensing, and …
Showcasing a barren plateau theory beyond the dynamical lie algebra
Barren plateaus have emerged as a pivotal challenge for variational quantum computing.
Our understanding of this phenomenon underwent a transformative shift with the recent …
Our understanding of this phenomenon underwent a transformative shift with the recent …
Quantum Information Orbitals (QIO): Unveiling Intrinsic Many-Body Complexity by Compressing Single-Body Triviality
The simultaneous treatment of static and dynamic correlations in strongly correlated electron
systems is a critical challenge. In particular, finding a universal scheme for identifying a …
systems is a critical challenge. In particular, finding a universal scheme for identifying a …
Entanglement entropy, single-particle occupation probabilities, and short-range correlations
A Bulgac - Physical Review C, 2023 - APS
For quantum many-body systems with short-range correlations (SRCs), the intimate
relationship between their magnitude, the behavior of the single-particle occupation …
relationship between their magnitude, the behavior of the single-particle occupation …
Multi-body entanglement and information rearrangement in nuclear many-body systems: a study of the Lipkin–Meshkov–Glick model
We examine how effective-model-space (EMS) calculations of nuclear many-body systems
rearrange and converge multi-particle entanglement. The generalized Lipkin–Meshkov …
rearrange and converge multi-particle entanglement. The generalized Lipkin–Meshkov …
Quantum correlations, entanglement spectrum, and coherence of the two-particle reduced density matrix in the extended Hubbard model
We study the ground state properties of the one-dimensional extended Hubbard model at
half filling from the perspective of its particle reduced density matrix. We focus on the …
half filling from the perspective of its particle reduced density matrix. We focus on the …