low-energy physics 中文意思是什麼
low-energy physics
解釋
低能物理學-
In quantum chromodynamics ( qcd ), vacuum is not trivial, that is, vacuum carry quantum numbers. such a behavior is embodied by non - perturbative con - densates of quarks and gluons. since hadrons are excitations with respect to the vacuum, hadronic properties are ultimately related to properties of the vacuum. based on the vacuum structure, some hadron properties have been described well. in the low energy region, qcd has two very important proper - ties : chiral symmetry spontaneous breaking and confinement, which are closely related to the vacuum characteristics of qcd. much experiments and theoretical studies have shown that chiral symmetry spontaneous breaking is very important to understand the low - energy feature of the strongly interacting physics, and the quark condensates give an expression to chiral symmetry spontaneous breaking. according to goldstone ' s theorem, the goldstone bosons with zero mass will emerge as the chiral symmetry is spontaneously broken. there are two ways : inear and non - linear methods to carry out this constraint. in our paper, we will use the non - linear method
大量實驗和理論研究表明，手征對稱自發破缺對于理解低能強相互作用十分重要，而夸克凝聚又是導致手征對稱自發破缺的因素。按goldstone理論，伴隨手征對稱自發破缺應該會有零質量的goldstonebosons產生。而對于這一條件的實現有線性和非線性兩種方法本文將用非線性的方法將手征對稱自發破缺應用於su （ 3 ）模型即重子八重態，得出描述其強相互作用的手征對稱自發破缺lagrange密度。 -
Preliminary results indicate that the standard and low electromagnetic interaction packages in geant4 give almost identical simulation on emc, the detector performance, such as energy / position resolution, satisfies requirements of physics design. different behaviors of hadrons and electrons in emc will be helpful for particle discrimination, such as e / discrimination. the complete and perfect offline simulation software will play an important role in physics study at bes
初步結果顯示:標準和低能兩種電磁相互作用模擬軟體包在bes能區給出了相同的模擬結果;探測器的運行指標，如能量解析度和位置解析度，滿足物理設計指標;強子和電子在emc中的不同行為將會給進一步的粒子鑒別（如e /鑒別）提供幫助;完整而完善的離線模擬軟體將在今後bes上的物理研究發揮重要作用。 -
Silica gels have lots of unique capabilities, nicer heat - insulating property, low density with porous structure, good transparency, low reflect index, nice mechanical elasticity, big surface area, for instance. these properties made it to be applied in many fields as optics, catalysis, sensor, high - energy physics, mechanism and so on
二氧化硅（ sio _ 2 ）凝膠具有許多獨特的性能，如良好的絕熱性，密度低且具有多孔結構，透明性好，反射指數低，機械彈性好，表面積大等，使其在光學、催化、傳感、高能物理、機械等領域獲得了廣泛應用。 -
Institute of low energy nuclear physics, beijing normal university, beijing radiation center longkou bite vacuum technology co., ltd
北京師范大學低能核物理研究所，北京市輻射中心山東口市比特真空技術有限公司 -
So it ' s very difficult to study nuclear phenomenon with qcd. while qhd is a low energy effective theory which describes hadronic physics very well
在當前， qhd理論是一個很好的研究中低能區強子物理的有效理論，其物理描述簡單，直觀。 -
In 1860, schrodinger first put forward the concept " schrodinger equations " in quantum mechanics and since then, the study on schrodinger equations has never stopped, for the mathematical description of many physical phenomena belongs to the field of schrodinger equations, such as nonlinear optic, plasma physics, fluid mechanics etc. as for the form of schrodinger equations, linear schrodinger equations was gradually replaced by nonlinear schrodinger equations ; as for the methods of solving schrodinger equations, the modulus estimate of energy, the principle of contraction mapping, fourier transformation and harmonic analysis are used ; as for the space of the solutions, many people have worked on the problem in bounded domain, euclidean space of dimension n, periodic bounded conditions and mixed regions and they also combined it with the generalization from low dimension to high dimension
） dinger方程，如非線性光學、等離子物理、流體力學[ 21 ]等；在方程形式上，從線性schr （ ? ） dinger方程到非線性schr （ ? ） dinger方程；在處理方法上，用能量模估計、壓縮映象原理和fourier變換調和分析等；在方程解空間上，研究有界區域、 n維歐氏空間、周期性有界區域和混合區域等，並且結合從低維向高維推廣。
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