{"product_id":"chronolith-the-discrete-time-crystal-physics-t-shirt","title":"Chronolith – The Discrete Time Crystal Physics T-Shirt","description":"\u003cp\u003eTap Chronolith every beat, and she answers every other beat.\u003c\/p\u003e\u003ch3\u003eThe Physics\u003c\/h3\u003e\u003cp\u003eA discrete time crystal is a driven many-body quantum system that responds at twice the drive period: kicked every T, it repeats every 2T, and the rhythm stays stable even when the kicks are imperfect. It breaks the time-translation symmetry of the drive.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003edrive period T   →   response period 2T\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eT: drive period (s)\u003c\/li\u003e\n\u003cli\u003e2T: response period (s)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFrank Wilczek proposed time crystals in 2012; discrete time crystals were seen in 2017 with trapped ions and NV centres, and in 2021 on Google's Sycamore processor.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eHonest caveat:\u003c\/em\u003e Equilibrium time crystals are ruled out (Watanabe and Oshikawa, 2015), and this is not perpetual motion: it needs a drive.\u003c\/p\u003e\u003ch3\u003eOn the shirt\u003c\/h3\u003e\u003cp\u003eFront: Chronolith, the pixel-art character, with the title. Back: the drive-and-response timing, the stability note, the no-go theorem and the 2012, 2017 and 2021 sources. Printed on a unisex tee.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"S \/ White","offer_id":50936538824807,"sku":"23002924093310383196","price":29.99,"currency_code":"USD","in_stock":true},{"title":"S \/ Black","offer_id":50936538857575,"sku":"53950027548996030478","price":29.99,"currency_code":"USD","in_stock":true},{"title":"M \/ White","offer_id":50936538890343,"sku":"61314515102195942179","price":29.99,"currency_code":"USD","in_stock":true},{"title":"M \/ Black","offer_id":50936538923111,"sku":"20476207565514864840","price":29.99,"currency_code":"USD","in_stock":true},{"title":"L \/ White","offer_id":50936538955879,"sku":"76500992192902284662","price":29.99,"currency_code":"USD","in_stock":true},{"title":"L \/ Black","offer_id":50936538988647,"sku":"11819545225738310985","price":29.99,"currency_code":"USD","in_stock":true},{"title":"XL \/ White","offer_id":50936539021415,"sku":"58783463378387448599","price":29.99,"currency_code":"USD","in_stock":true},{"title":"XL \/ Black","offer_id":50936539054183,"sku":"30961966646061213440","price":29.99,"currency_code":"USD","in_stock":true},{"title":"2XL \/ White","offer_id":50936539086951,"sku":"17588114368410043710","price":29.99,"currency_code":"USD","in_stock":true},{"title":"2XL \/ Black","offer_id":50936539119719,"sku":"13793418829844368084","price":29.99,"currency_code":"USD","in_stock":true},{"title":"3XL \/ White","offer_id":50936539152487,"sku":"13585951499690882557","price":29.99,"currency_code":"USD","in_stock":true},{"title":"3XL \/ Black","offer_id":50936539185255,"sku":"22119714771840801252","price":29.99,"currency_code":"USD","in_stock":true},{"title":"4XL \/ White","offer_id":50936539218023,"sku":"15936636816202633973","price":29.99,"currency_code":"USD","in_stock":true},{"title":"4XL \/ Black","offer_id":50936539250791,"sku":"23362999008151366327","price":29.99,"currency_code":"USD","in_stock":true},{"title":"5XL \/ White","offer_id":50936539283559,"sku":"33842448383351998700","price":29.99,"currency_code":"USD","in_stock":true},{"title":"5XL \/ Black","offer_id":50936539316327,"sku":"10003473801481737857","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/time-crystal_front_01_white.png?v=1793595453","url":"https:\/\/pixelatedphysics.com\/products\/chronolith-the-discrete-time-crystal-physics-t-shirt","provider":"Pixelated Physics","version":"1.0","type":"link"}