fermions

/ˈfɜrmiˌɑnz/ /ˈfɜrmiənz/

Meanings

noun

(Standard Model) Any elementary or composite particle that has half-integer spin and thus obeys Fermi–Dirac statistics and the Pauli exclusion principle (equivalently, a particle for which the wavefunction of any system of identical such particles changes sign whenever two are swapped); a baryon, a lepton or a quark; (slightly more loosely) any such particle or any composite particle composed of fermions.

Examples :

"According to the spin–statistics theorem, the wavefunction of a system of identical fermions (particles of half-integer spin) is antisymmetric under the operation of swapping any two particles."

physics

Related Words

wavefunction noun

/ˈweɪv.fʌŋ(k).ʃən/

A mathematical function that describes the propagation of the quantum mechanical wave associated with a particle (or system of particles), related to the probability of finding the particle in a particular region of space.

"The physicist calculated the wavefunction to predict the most likely location of the electron within the atom. "

exclusion noun

/ɪksˈkluːʒən/

The act of excluding or shutting out; removal from consideration or taking part.

"The exclusion of students with allergies from the school bake sale was a necessary precaution. "

particles noun

/ˈpɑːtɪkl̩z/ /ˈpɑɹtɪkl̩z/

A very small piece of matter, a fragment; especially, the smallest possible part of something.

"Dust particles floated in the sunbeam coming through the window. "

composite noun

/ˈkɒmpəzɪt/ /kəmˈpɑzɪt/

A mixture of different components.

"The countertop is a composite of recycled glass and concrete. "

identical noun

/aɪˈdɛntɪkl̩/

(usually pluralized) Something which has exactly the same properties as something else.

"My sister and I have identical handwriting styles; it's difficult for our teacher to tell our papers apart. "

statistics noun

/stəˈtɪstɪks/

A mathematical science concerned with data collection, presentation, analysis, and interpretation.

"Statistics is the only mathematical field required for many social sciences."

antisymmetric adjective

/ˌæntiːsɪˈmɛtrɪk/ /ˌæntaɪsɪˈmɛtrɪk/

(of a binary relation R on a set S) Having the property that, for any two distinct elements of S, at least one is not related to the other via R; equivalently, having the property that, for any x, y ∈ S, if both xRy and yRx then x=y.

"The "is older than or the same age as" relationship is antisymmetric because if person A is older than or the same age as person B, and person B is older than or the same age as person A, then person A and person B must be the same age. "

standard noun

/ˈstændəd/ /ˈstændəɹd/

A principle or example or measure used for comparison.

"The school's new uniform policy is the standard for all students. "

operation noun

/ˌɒpəˈɹeɪʃən/ /ˌɑpəˈɹeɪʃən/

The method by which a device performs its function.

"The operation of the new coffee machine is quite simple. "

according verb

/əˈkɔːdɪŋ/ /ə.ˈkɔɹd.ɪŋ/

To make to agree or correspond; to suit one thing to another; to adjust.

"The tailor will according the suit to fit you perfectly. "

principle noun

/ˈpɹɪnsəpəl/

A fundamental assumption or guiding belief.

"We need some sort of principles to reason from."

elementary noun

/(ˌ)ɛlɪ̈ˈmɛnt(ə)ɹɪ/ /ˌɛlɪ̈ˈmɛnt(ə)ɹi/

An elementary school

"My son attends the elementary school near our house. "