{"product_id":"9780192889119","title":"Background Independence in Classical and Quantum Gravity","description":"\u003cp\u003eIt is often claimed that any quantum theory of gravity needs its defining equations to be independent of a particular spacetime geometry. James Read illuminates our understanding of background independence by mapping its possible definitions and assessing how various classical and quantum theories of gravity fare on these criteria.\u003c\/p\u003e","brand":"Oxford University Press","offers":[{"title":"Default Title","offer_id":49096368226531,"sku":"00000_00000_00000_00000","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/3758\/6147\/files\/9780192889119-1.jpg?v=1788325696","url":"https:\/\/usa.kinokuniya.com\/ja\/products\/9780192889119","provider":"Books Kinokuniya USA","version":"1.0","type":"link"}