Observation of Complex Bound States in the Spin-1/2HeisenbergXXZChain Using Local Quantum Quenches

We study quantum quenches to the one-dimensional Bose gas with attractive interactions in the case when the initial state is an ideal one-dimensional Bose condensate. We focus on properties of the stationary state reached at late times after the quench. This displays a finite density of multi-particle bound states, whose rapidity distribution is determined exactly by means of the quench action method. We discuss the relevance of the multi-particle bound states for the physical properties of the system, computing in particular the stationary value of the local pair correlation function g_2g2.

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Real-time and real-space spin and energy dynamics in one-dimensional spin-12systems induced by local quantum quenches at finite temperatures

Physical Review B ◽

10.1103/physrevb.89.075139 ◽

2014 ◽

Vol 89 (7) ◽

Cited By ~ 80

Author(s):

C. Karrasch ◽

J. E. Moore ◽

F. Heidrich-Meisner

Keyword(s):

Real Time ◽

Real Space ◽

One Dimensional ◽

Energy Dynamics ◽

Local Quantum ◽

Quantum Quenches

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Universal corrections to entanglement entropy of local quantum quenches

Journal of High Energy Physics ◽

10.1007/jhep08(2016)127 ◽

2016 ◽

Vol 2016 (8) ◽

Cited By ~ 19

Author(s):

Justin R. David ◽

Surbhi Khetrapal ◽

S. Prem Kumar

Keyword(s):

Entanglement Entropy ◽

Local Quantum ◽

Quantum Quenches

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Recent Radiative and Collisional Atomic Data of Astrophysical Interest

International Astronomical Union Colloquium ◽

10.1017/s0252921100107596 ◽

1988 ◽

Vol 102 ◽

pp. 129-132

Author(s):

K.L. Baluja ◽

K. Butler ◽

J. Le Bourlot ◽

C.J. Zeippen

Keyword(s):

Mass Production ◽

Bound States ◽

Physical Models ◽

Impact Excitation ◽

Electron Impact Excitation ◽

Atomic Data ◽

Isoelectronic Sequence ◽

Astrophysical Interest ◽

Radiative Transitions ◽

Forbidden Transitions

SummaryUsing sophisticated computer programs and elaborate physical models, accurate radiative and collisional atomic data of astrophysical interest have been or are being calculated. The cases treated include radiative transitions between bound states in the 2p4and 2s2p5configurations of many ions in the oxygen isoelectronic sequence, the photoionisation of the ground state of neutral iron, the electron impact excitation of the fine-structure forbidden transitions within the 3p3ground configuration of CℓIII, Ar IV and K V, and the mass-production of radiative data for ions in the oxygen and fluorine isoelectronic sequences, as part of the international Opacity Project.

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