The postmodern heart: war veterans’ experiences of invasive cardiac technology

Anderson, Carole

doi:10.1111/j.1365-2648.2004.02985.x

Cited by 10 publications

(15 citation statements)

References 33 publications

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“…Interpretive interactionism, therefore, fits well in a health care culture, which purports to seek greater understanding of the patient’s journey (Hepworth & Krug 1999, Aranda‐Naranjo et al. 2000, Anderson 2004, Woodgate & Degner 2004). Therefore, when exploring the early experiences and transitional journey’s of parents who have a very preterm infant, adopting interpretive interactionism as a guiding framework would appear justified.…”

Section: Methodsmentioning

confidence: 97%

Parental liminality: a way of understanding the early experiences of parents who have a very preterm infant

Watson

2010

Journal of Clinical Nursing

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Section: Methodsmentioning

confidence: 97%

Parental liminality: a way of understanding the early experiences of parents who have a very preterm infant

Watson

2010

Journal of Clinical Nursing

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“…The spin fluctuation theory is essentially a weak coupling approach. The RVB picture mentioned in the introduction is the strong coupling version of the spin fluctuation approach [26] (though Anderson differs on this [122]). The amazing thing was how quickly the RVB concept emerged (Anderson first spoke on this before the discovery of YBCO).…”

Section: Rvbmentioning

confidence: 99%

The electronic nature of high temperature cuprate superconductors

2003

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We review the field of high temperature cuprate superconductors, with an emphasis on the nature of their electronic properties. After a general overview of experiment and theory, we concentrate on recent results obtained by angle resolved photoemission, inelastic neutron scattering, and optical conductivity, along with various proposed explanations for these results. We conclude by reviewing efforts which attempt to identify the energy savings involved in the formation of the superconducting ground state.ELECTRONIC NATURE OF HTSC 3 since 1973, and was not much of an improvement over NbN (15K) which had been discovered all the way back in 1941 [1]. This pessimistic outlook was best articulated by Bernd Matthias in a number of papers which still make interesting reading today [2]. Such pessimism was not confined to experiment, as witnessed by the famous paper of Cohen and Anderson [3]. As was well appreciated by that time, the A15 materials with highest T c were on the verge of a structural transition, and thus it was anticipated that one could not push T c much higher before the lattice became unstable [4].Despite this, a number of new classes of superconductors had been discovered in the period before 1986, including the ternary magnetic superconductors such as ErRh 4 B 4 and HoMo 6 S 8 , and various uranium based superconductors such as α-U and U 6 Fe, many of these discovered by Matthias and his various associates. Matthias' speculation that something really different was going on in f electron superconductors was spectacularly confirmed with the discovery by Frank Steglich in 1979 of "heavy fermion" superconductivity in CeCu 2 Si 2 [5], followed by the discovery of superconductivity in UPt 3 and UBe 13 [6].Heavy fermion superconductivity was one of the main research topics in fundamental physics prior to 1986, and its history has had some impact on the cuprate field. Unlike the magnetic superconductors such as ErRh 4 B 4 where the magnetic moments are confined to the rare earth site and the superconductivity to the ligand sites, in heavy fermion superconductors, the f electrons themselves become superconducting. This is known from the extremely high effective mass of the superconducting carriers. More properly, the carriers should be thought of as composite objects of conduction electron charge and f electron spin [7]. The fascinating thing about these materials, though, is that their superconducting ground states do not appear to have the L=0, S=0 symmetry that Cooper pairs exhibit in normal superconductors [8,9].As with cuprates, heavy fermion superconductivity had its own prehistory as well, that being the field of superfluid 3 He. 3 He had been speculated in the 1960s to possibly be a paired superfluid with non-zero orbital angular momentum, in particular L=2 pairing [10]. The idea was that the hard core repulsion of the atoms would prevent L=0 pairing, but that longer range pairs could be stabilized by the attractive van der Waals interaction between the He atoms. Subsequently, Layzer and Fay [11] showed...

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“…The most familiar strong-coupling variant of the Hubbard model is the t − J model, and the physics of (square lattice) doped Mott insulators described by this model was reviewed by Dagotto [10]. As emphasized by, e.g., Anderson [11], a vital component of the t − J Hamiltonian is the constraint of no double occupancy. That is, in the t − J model one does not use the electron creation and annihilation operators of Eq.…”

Section: Model Hamiltonianmentioning

confidence: 99%

Increasing superconductingTc’s by a factor of 1000 with large hopping anisotropies in two-dimensionalt−Jmodel systems

2002

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We have studied the enhancement of the superconducting transition temperature, Tc, in a t − J − U model of electrons moving on a square lattice in which anisotropic electronic hopping is introduced. The inclusion of such hopping mimics, in a approximate fashion, a potentially important characteristic of materials possessing stripelike charge and spin correlations. For this model we have calculated Tc for singlet pairing using the non self-consistent Thouless criterion, and find a dramatic enhancement of Tc induced by hopping anisotropies. Further, the maximum increase in Tc is obtained when the system is pushed towards the extreme anisotropy limit, that is, when the hopping of electrons is confined to occur in 1 + 0 + dimensions. We demonstrate that in this limit the increase in Tc, with respect to the isotropic system, can be of the order of 1000. We have also determined that in the extreme anisotropy limit the superconducting gap is an equal mixture of s and d pairing symmetries (two choices of such a combination being s + d and s + id) owing to the reduced (square to rectangular) symmetry of the system in the presence of hopping anisotropies. Thus, the presence of d-wave superconducting features in materials whose symmetry is very different from that of a two-dimensional square lattice, with the anisotropy produced by the appearance of stripes, is not unexpected.

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The postmodern heart: war veterans’ experiences of invasive cardiac technology

Cited by 10 publications

References 33 publications

Parental liminality: a way of understanding the early experiences of parents who have a very preterm infant

Parental liminality: a way of understanding the early experiences of parents who have a very preterm infant

The electronic nature of high temperature cuprate superconductors

Increasing superconductingTc’s by a factor of 1000 with large hopping anisotropies in two-dimensionalt−Jmodel systems

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