In one of the first pages and crucial scenes of The Lying Days （1953）, we soon associate the narrating voice with that of a bright, inquisitive child of Scottish descent immersed in the harsh Witwatersrand scenario ...In one of the first pages and crucial scenes of The Lying Days （1953）, we soon associate the narrating voice with that of a bright, inquisitive child of Scottish descent immersed in the harsh Witwatersrand scenario of a mining estate outskirts in the 1930s, along a path crammed with Jews＇ concession stores and exotic-looking natives. The unruly little girl is Helen Shaw, the late Nadine Gordimer＇s fictional double in her still somewhat neglected first novel, a Bildungsroman where the South African writer coming from Springs admirably capitalized on the ＂camera-eye＂ perspectives and zooming-in on details which had already informed much of her masterly short fiction. The aim of the present paper is to shed light on Helen＇s difficult growth towards sociopolitical and ethical awakening--in a country finding itself more and more trapped in the apartheid grip--by pointing out the earliest, embryonic stages of such a progressive knocking down of epistemic barriers. The author will thus focus on ＂The Mine＂, the first and most concise of the three parts making up the novel, and show how Gordimer＇s acute prose, incisive style, and descriptive strategies prove to be a fitting tool for recording and weighing the experience of an indefatigable observer, a hungry mind in search of erased features, meaningful connections, revealing contexts and subjects展开更多
The ground and low-lying collective states of a rotating system of N=3 bosons harmonically confined in quasi-two-dimension and interacting via repulsive finite-range Gaussian potential is studied in weakly to moderate...The ground and low-lying collective states of a rotating system of N=3 bosons harmonically confined in quasi-two-dimension and interacting via repulsive finite-range Gaussian potential is studied in weakly to moderately interacting regime.The N-body Hamiltonian matrix is diagonalized in subspaces of quantized total angular momenta 0 ≤ L ≤ 4N to obtain the ground and low-lying eigenstates.Our numerical results show that breathing modes with N-body eigenenergy spacing of 2hω⊥,known to exist in strictly 2D system with zero-range(δ-function) interaction potential,may as well exist in quasi-2D system with finite-range Gaussian interaction potential.To gain an insight into the many-body states,the von Neumann entropy is calculated as a measure of quantum correlation and the conditional probability distribution is analyzed for the internal structure of the eigenstates.In the rapidly rotating regime the ground state in angular momentum subspaces L=(q/2)N(N-1) with q=2,4 is found to exhibit the anticorrelation structure suggesting that it may variationally be described by a Bose–Laughlin like state.We further observe that the first breathing mode exhibits features similar to the Bose–Laughlin state in having eigenenergy,von Neumann entropy and internal structure independent of interaction for the three-boson system considered here.On the contrary,for eigenstates lying between the Bose–Laughlin like ground state and the first breathing mode,values of eigenenergy,von Neumann entropy and internal structure are found to vary with interaction.展开更多
文摘In one of the first pages and crucial scenes of The Lying Days （1953）, we soon associate the narrating voice with that of a bright, inquisitive child of Scottish descent immersed in the harsh Witwatersrand scenario of a mining estate outskirts in the 1930s, along a path crammed with Jews＇ concession stores and exotic-looking natives. The unruly little girl is Helen Shaw, the late Nadine Gordimer＇s fictional double in her still somewhat neglected first novel, a Bildungsroman where the South African writer coming from Springs admirably capitalized on the ＂camera-eye＂ perspectives and zooming-in on details which had already informed much of her masterly short fiction. The aim of the present paper is to shed light on Helen＇s difficult growth towards sociopolitical and ethical awakening--in a country finding itself more and more trapped in the apartheid grip--by pointing out the earliest, embryonic stages of such a progressive knocking down of epistemic barriers. The author will thus focus on ＂The Mine＂, the first and most concise of the three parts making up the novel, and show how Gordimer＇s acute prose, incisive style, and descriptive strategies prove to be a fitting tool for recording and weighing the experience of an indefatigable observer, a hungry mind in search of erased features, meaningful connections, revealing contexts and subjects
文摘The ground and low-lying collective states of a rotating system of N=3 bosons harmonically confined in quasi-two-dimension and interacting via repulsive finite-range Gaussian potential is studied in weakly to moderately interacting regime.The N-body Hamiltonian matrix is diagonalized in subspaces of quantized total angular momenta 0 ≤ L ≤ 4N to obtain the ground and low-lying eigenstates.Our numerical results show that breathing modes with N-body eigenenergy spacing of 2hω⊥,known to exist in strictly 2D system with zero-range(δ-function) interaction potential,may as well exist in quasi-2D system with finite-range Gaussian interaction potential.To gain an insight into the many-body states,the von Neumann entropy is calculated as a measure of quantum correlation and the conditional probability distribution is analyzed for the internal structure of the eigenstates.In the rapidly rotating regime the ground state in angular momentum subspaces L=(q/2)N(N-1) with q=2,4 is found to exhibit the anticorrelation structure suggesting that it may variationally be described by a Bose–Laughlin like state.We further observe that the first breathing mode exhibits features similar to the Bose–Laughlin state in having eigenenergy,von Neumann entropy and internal structure independent of interaction for the three-boson system considered here.On the contrary,for eigenstates lying between the Bose–Laughlin like ground state and the first breathing mode,values of eigenenergy,von Neumann entropy and internal structure are found to vary with interaction.
