標(biāo)題: Titlebook: An Introduction to Quantum Spin Systems; John Parkinson,Damian J J Farnell Book 2010 Springer-Verlag Berlin Heidelberg 2010 Theoretical ph [打印本頁(yè)] 作者: Dopamine 時(shí)間: 2025-3-21 17:41
書(shū)目名稱An Introduction to Quantum Spin Systems影響因子(影響力)
書(shū)目名稱An Introduction to Quantum Spin Systems影響因子(影響力)學(xué)科排名
書(shū)目名稱An Introduction to Quantum Spin Systems網(wǎng)絡(luò)公開(kāi)度
書(shū)目名稱An Introduction to Quantum Spin Systems網(wǎng)絡(luò)公開(kāi)度學(xué)科排名
書(shū)目名稱An Introduction to Quantum Spin Systems被引頻次
書(shū)目名稱An Introduction to Quantum Spin Systems被引頻次學(xué)科排名
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書(shū)目名稱An Introduction to Quantum Spin Systems讀者反饋
書(shū)目名稱An Introduction to Quantum Spin Systems讀者反饋學(xué)科排名
作者: epinephrine 時(shí)間: 2025-3-21 21:49 作者: 無(wú)能力 時(shí)間: 2025-3-22 03:43 作者: antidepressant 時(shí)間: 2025-3-22 06:19 作者: 陳腐思想 時(shí)間: 2025-3-22 11:51
Antiferromagnetic Spin Waves, reversed. The elementary excitations from the ground state have . spins reversed. To calculate the energies of these states, des Cloiseaux and Pearson used a modified version of the same method that Hulthén had used for the ground state energy. The modifications are quite significant and involve so作者: 思想上升 時(shí)間: 2025-3-22 14:16 作者: 平項(xiàng)山 時(shí)間: 2025-3-22 19:48
Spin-Wave Theory,er we describe a much more general method, due originally to Anderson, which is widely used to obtain results for many different systems. It is referred to as ‘spin-wave theory’ as it gives results for the energies of the elementary excitations or spin waves. The method works for both ferromagnets a作者: 類(lèi)型 時(shí)間: 2025-3-22 21:13
Numerical Finite-Size Calculations,h make use of sophisticated approximation techniques developed in many areas of quantum many-body theory. However, in this chapter we first look a very simple numerical method that does not involve any theory other than the assumption that the properties of small systems change smoothly as the size 作者: 大方不好 時(shí)間: 2025-3-23 02:12 作者: Overstate 時(shí)間: 2025-3-23 09:10 作者: Discrete 時(shí)間: 2025-3-23 13:19 作者: pus840 時(shí)間: 2025-3-23 16:35
0075-8450 ntary material: The topic of lattice quantum spin systems is a fascinating and by nowwell-established branch of theoretical physics. However, many important questions remain to be answered. Their intrinsically quantum mechanical nature and the large (usually effectively infinite) number of spins in 作者: Herpetologist 時(shí)間: 2025-3-23 18:00
Introduction,r interactions (quantum spin systems). The nature of the exchange interaction is discussed, and we distinguish between ferromagnetic and antiferromagnetic coupling. Finally we summarise the contents of subsequent chapters.作者: inflame 時(shí)間: 2025-3-24 02:06 作者: 功多汁水 時(shí)間: 2025-3-24 06:23 作者: 尊重 時(shí)間: 2025-3-24 09:58
Besondere Herstellungsverfahren,fted plane waves with wave vector .. . is related to the rate of change of the density of the distribution .. Once the fundamental integral equation has been derived it is solved by Fourier transform. Finally the solution . is used to find the antiferromagnetic ground-state energy.作者: –FER 時(shí)間: 2025-3-24 11:16 作者: Acetaldehyde 時(shí)間: 2025-3-24 16:15 作者: 自戀 時(shí)間: 2025-3-24 21:20 作者: encyclopedia 時(shí)間: 2025-3-25 01:04 作者: angina-pectoris 時(shí)間: 2025-3-25 04:21
The XY Model, combining these fermion operators into new ‘quasiparticle’ operators that are still fermions. The ground state is then a state in which all eigenstates of these operators are occupied up to the ‘Fermi surface’. It is then possible to calculate the ground state energy of this system.作者: Glaci冰 時(shí)間: 2025-3-25 08:43
Spin-Wave Theory, simple and the results are usually exact. The antiferromagnetic version is more complicated and the results are approximate. However, these results are still in reasonable correspondence with exact results, where these are known, and the best of other approximate methods.作者: commensurate 時(shí)間: 2025-3-25 12:52 作者: 食料 時(shí)間: 2025-3-25 17:50
Besondere Herstellungsverfahren,at happens when there are large numbers of interacting spins. Finally we introduce the infinite linear (i.e. one-dimensional) chain of spin-1/2 atoms. Some preliminary classical results for this model are given as background for the full quantum treatment which will be studied in detail in the following chapters.作者: 鎮(zhèn)壓 時(shí)間: 2025-3-25 21:18
Book 2010 remain to be answered. Their intrinsically quantum mechanical nature and the large (usually effectively infinite) number of spins in macroscopic materials often leads to unexpected or counter-intuitive results and insights. Spin systems are not only the basic models for a whole host of magnetic mat作者: Ganglion-Cyst 時(shí)間: 2025-3-26 03:53 作者: 首創(chuàng)精神 時(shí)間: 2025-3-26 06:05
Antiferromagnetic Spin Waves,ined using conventional antiferromagnetic spin-wave theory (covered in a later chapter). We finish this chapter with a discussion of the somewhat unexpected behaviour of the excitation spectrum when an external magnetic field is present.作者: CAMP 時(shí)間: 2025-3-26 09:01
Maschinen für das Zusammenfügen der Theiles of the order of 20 for full diagonalisation and 40 for partial diagonalisation. Clearly the ground state energy and the energies of the elementary excitations are obtained directly. Also the partition function can be constructed directly for full diagonalisation because all the eigenvalues are kno作者: 蓋他為秘密 時(shí)間: 2025-3-26 12:54
,Die Maschinen für die Blechbearbeitung,enberg model on the linear chain is used as a test-case for all of these methods. We show that even simple applications of these methods give improved results for the ground-state energy compared to the classical result.作者: 消瘦 時(shí)間: 2025-3-26 18:20 作者: CAMP 時(shí)間: 2025-3-26 20:57
,Allgemeines über Werkzeugmaschinen,del are studied. The chapter shows how the application of a range of approximate techniques, in addition to the few isolated exact results, can provide a comprehensive and compelling description of the ground-state properties of a wide range of quantum spin systems.作者: 借喻 時(shí)間: 2025-3-27 01:16
0075-8450 ions of the Heisenberg and XY models at zero temperature using the Bethe Ansatz and the Jordan-Wigner transformation are covered in some detail. The use of approximat978-3-642-13289-6978-3-642-13290-2Series ISSN 0075-8450 Series E-ISSN 1616-6361 作者: Genteel 時(shí)間: 2025-3-27 09:22 作者: NATAL 時(shí)間: 2025-3-27 09:39
Numerical Finite-Size Calculations,s of the order of 20 for full diagonalisation and 40 for partial diagonalisation. Clearly the ground state energy and the energies of the elementary excitations are obtained directly. Also the partition function can be constructed directly for full diagonalisation because all the eigenvalues are kno作者: 遭受 時(shí)間: 2025-3-27 15:14
Other Approximate Methods,enberg model on the linear chain is used as a test-case for all of these methods. We show that even simple applications of these methods give improved results for the ground-state energy compared to the classical result.作者: 完成 時(shí)間: 2025-3-27 21:51 作者: Acumen 時(shí)間: 2025-3-27 23:25
Quantum Magnetism,del are studied. The chapter shows how the application of a range of approximate techniques, in addition to the few isolated exact results, can provide a comprehensive and compelling description of the ground-state properties of a wide range of quantum spin systems.作者: AVERT 時(shí)間: 2025-3-28 04:41 作者: PET-scan 時(shí)間: 2025-3-28 07:46 作者: Accede 時(shí)間: 2025-3-28 11:42 作者: 傳染 時(shí)間: 2025-3-28 16:15 作者: maroon 時(shí)間: 2025-3-28 21:21 作者: meritorious 時(shí)間: 2025-3-29 01:08 作者: 事與愿違 時(shí)間: 2025-3-29 03:23
Besondere Herstellungsverfahren, reversed. The elementary excitations from the ground state have . spins reversed. To calculate the energies of these states, des Cloiseaux and Pearson used a modified version of the same method that Hulthén had used for the ground state energy. The modifications are quite significant and involve so作者: 樂(lè)器演奏者 時(shí)間: 2025-3-29 10:01
https://doi.org/10.1007/978-3-642-91535-2ts of the spins are involved, and with unequal weights. This system has interesting and unusual features and it is exactly soluble i.e. integrable. However the mathematical techniques involved here are not based on the Bethe Ansatz, but instead use a Jordan-Wigner transformation. The first step is t作者: Vulvodynia 時(shí)間: 2025-3-29 13:47 作者: 偽造者 時(shí)間: 2025-3-29 18:47
Maschinen für das Zusammenfügen der Theileh make use of sophisticated approximation techniques developed in many areas of quantum many-body theory. However, in this chapter we first look a very simple numerical method that does not involve any theory other than the assumption that the properties of small systems change smoothly as the size
