Occupational Stress And The Banking Industry

Michailidis, Maria; Michailidis, Evie

doi:10.1037/e506862017-001

Cited by 4 publications

(6 citation statements)

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“…The counting of zero modes for PBC can be determined similarly. [39] In addition, we note that zero modes are stable with respect to introducing potential energy as long as it commutes with particle-hole symmetry P and anticommutes with inversion operator. An example of such potential energy is provided by the staggered chemical potential, L i=1 (−) i Z i , which does not change the number of zero modes in the model (1) with OBC for even system sizes.…”

Section: Takedownmentioning

confidence: 88%

“…Additional discussion of the errors and benchmarks of the method will be presented elsewhere. [39] Finally, we compare the eigenstates of H FSA with exact eigenstates from the special band obtained numerically in L = 32 chain with PBC. In Fig.…”

Section: Takedownmentioning

confidence: 99%

“…This is indeed confirmed by iTEBD simulations for weak but finite staggered fields. [39] While our symmetry arguments allowed us to enumerate all zero modes, the complete understanding of their algebraic properties appears to be a much more difficult problem. Interestingly, the many-body wave functions of the zero mode eigenstates may be chosen such that they all have integer coefficients in the product state basis (modulo overall normalization).…”

Section: Takedownmentioning

confidence: 99%

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Weak ergodicity breaking from quantum many-body scars

et al. 2018

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Certain wave functions of non-interacting quantum chaotic systems can exhibit "scars" in the fabric of their real-space density profile. Quantum scarred wave functions concentrate in the vicinity of unstable periodic classical trajectories. We introduce the notion of many-body quantum scars which reflect the existence of a subset of special many-body eigenstates concentrated in certain parts of the Hilbert space. We demonstrate the existence of scars in the Fibonacci chain-the onedimensional model with a constrained local Hilbert space realized in the 51 Rydberg atom quantum simulator [H. Bernien et al., arXiv:1707.04344]. The quantum scarred eigenstates are embedded throughout the thermalizing many-body spectrum, but surprisingly lead to direct experimental signatures such as robust oscillations following a quench from a charge-density wave state found in experiment. We develop a model based on a single particle hopping on the Hilbert space graph, which quantitatively captures the scarred wave functions up to large systems of L = 32 atoms. Our results suggest that scarred many-body bands give rise to a new universality class of quantum dynamics, which opens up opportunities for creating and manipulating novel states with long-lived coherence in systems that are now amenable to experimental study.

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Section: Takedownmentioning

confidence: 88%

Section: Takedownmentioning

confidence: 99%

Section: Takedownmentioning

confidence: 99%

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Weak ergodicity breaking from quantum many-body scars

et al. 2018

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“…These oscillations can also be described within TDVP. 72,73 We note that it is also possible to describe the corresponding scarred eigenstates using the FSA scheme starting from |Z 3 product state. Moreover, the first step of the FSA recurrence still remains exact.…”

Section: Fsa Subspace As a Basis For Quantum Scarred Eigenstatesmentioning

confidence: 99%

Quantum scarred eigenstates in a Rydberg atom chain: Entanglement, breakdown of thermalization, and stability to perturbations

et al. 2018

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Recent realization of a kinetically-constrained chain of Rydberg atoms by Bernien et al. [Nature 551, 579 (2017)] resulted in the observation of unusual revivals in the many-body quantum dynamics. In our previous work, Turner et al. [arXiv:1711.03528], such dynamics was attributed to the existence of "quantum scarred" eigenstates in the many-body spectrum of the experimentally realized model. Here we present a detailed study of the eigenstate properties of the same model. We find that the majority of the eigenstates exhibit anomalous thermalization: the observable expectation values converge to their Gibbs ensemble values, but parametrically slower compared to the predictions of the eigenstate thermalization hypothesis (ETH). Amidst the thermalizing spectrum, we identify non-ergodic eigenstates that strongly violate the ETH, whose number grows polynomially with system size. Previously, the same eigenstates were identified via large overlaps with certain product states, and were used to explain the revivals observed in experiment. Here we find that these eigenstates, in addition to highly atypical expectation values of local observables, also exhibit sub-thermal entanglement entropy that scales logarithmically with the system size. Moreover, we identify an additional class of quantum scarred eigenstates, and discuss their manifestations in the dynamics starting from initial product states. We use forward scattering approximation to describe the structure and physical properties of quantum-scarred eigenstates. Finally, we discuss the stability of quantum scars to various perturbations. We observe that quantum scars remain robust when the introduced perturbation is compatible with the forward scattering approximation. In contrast, the perturbations which most efficiently destroy quantum scars also lead to the restoration of "canonical" thermalization. arXiv:1806.10933v2 [cond-mat.quant-gas]

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“…The current study focuses on the exploitation of grape seeds paste which is the major grape seed oil by-product, targeting on the discovery of extracts with advantageous dermo-cosmetic properties. Based on previous studies of our group 1 , grape seed paste showed significant inhibition activity against tyrosinase, collagenase and elastase enzymes. Thus, it could be a potential exploitable product for cosmetic industry.…”

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confidence: 89%