🌐EnglishEnglishBahasa IndonesiaFrançaisPortuguêsالعربية한국어中文日本語EntityQ28457887· pop 7· linked from 194 articlesghost fieldAlso known as Ghostfields without physical meaning to introduce mathematical consistencyAvailable in 7 languagesFrançaisPortuguêsالعربيةBahasa Indonesiasimple한국어via Wikidata sitelinks · CC0Connectionspath integralEntityFaddeev–Popov ghostEntityCategoriesQuantum field theory