V2EX fermi gas

Fermi Gas

定义 Definition

费米气体:由费米子(自旋为半整数、服从泡利不相容原理的粒子,如电子、中子、某些原子)组成的量子气体体系。它常用于描述在低温或高密度下表现出量子简并特性的粒子集合;理想化模型中常指理想费米气体(粒子之间相互作用可忽略)。

发音 Pronunciation

/frmi s/

例句 Examples

A Fermi gas behaves very differently from a classical gas at low temperatures.
费米气体在低温下的行为与经典气体非常不同。

In a degenerate Fermi gas, the Pauli exclusion principle determines how particles fill energy states.
在简并费米气体中,泡利不相容原理决定了粒子如何占据能量态。

词源 Etymology

“Fermi”来自意大利物理学家恩里科费米(Enrico Fermi)的姓氏;“gas”意为“气体”。该术语用于指代由费米子构成并服从费米狄拉克统计的气体模型,与“Bose gas(玻色气体)”相对。

相关词 Related Words

文学与作品 Literary Works

  • Statistical Physics(Landau & Lifshitz,《统计物理》):讨论理想费米气体与费米狄拉克统计的经典教材。
  • Pathria and Beale: Statistical Mechanics(《统计力学》):以费米气体作为量子统计的重要模型展开推导与应用。
  • Solid State Physics(Ashcroft & Mermin,《固体物理导论》):在电子气/简并费米气体近似下解释金属中电子的行为。
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