fizinfo AT lists.kfki.hu

Subject: ELFT HÍRADÓ

List archive

[Fizinfo] BME Elm. Fiz. Szeminárium, márc. 1., Krasznai Anna

From: Janos Asboth <asboth.janos AT ttk.bme.hu>
To: elmfiz.oktatok-kutatok AT lists.bme.hu, fizinfo AT lists.kfki.hu, elmfiz.hallgatok AT lists.bme.hu
Subject: [Fizinfo] BME Elm. Fiz. Szeminárium, márc. 1., Krasznai Anna
Date: Wed, 28 Feb 2024 17:39:31 +0100
Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=ttk.bme.hu; dmarc=pass action=none header.from=ttk.bme.hu; dkim=pass header.d=ttk.bme.hu; arc=none
Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=DZfKKmDNtFDMlqLzRYaFh+WHNkRKy6HngWeBZ+fdqTw=; b=jTOISyzqkZL/0tvp0w/3FGQq9bS6Z9j68/6H6r0Cum3+rVQ8Zjmhs8VIfh3QCY/ppnYq+ul/hmDKpqKKkQ4P2Up+UNGMgv+3Ja2XojpYp8yGd2qZHY3EmbGKsF+hlYyACpi8MtNOIbmkPhL4y+hFd90amC0E6WnT7toOF+xIa0LtdumAPhWaYikaJAztOQB1Zvaam2YAJ2QSDilUpohzrJieYQ9ymPvjhofXtfrEkg3LaJIVpX4kPQaw71Hq6Sl1pF/GjNe3N2FoexTv/281TDJcI+vOy2FwwotLvJi5fhB8TTXwu+TVdINEm1wNQPS3JMzlujOjvUaiyq6U2NLWyg==
Arc-seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=frIET/crRiV9lyb8q+/6NEuy/1jhfbpktr2aLsppam3/0KI2iVpCDWu8ZwilKpH8xamk5+6IgTnYflz/NXEgeQ4LEwcBtewu9Hf2tg0sO2Ws46vyt+Tvmv4XRTRjPwph43cInn1ncVVuSyW0ReomvrTxy/F9Qu7mem0SSvOjP1JpfbT01PK+T4NS4KGivvAoS6YydCNCF4pterXZZZDOU0Ei1xgd9tYHF4W+OmP/sgF+s8NudC0ySLlaNwFFrUGAL4Wn1/w2dYXyePrq8sT18MZfqKavKMYeRMd/ttcHKz7327geOUWW5cE/za0IA3mxLNwsAVuOvc0Bs/GSmRRmXA==
Authentication-results: smtp012.wigner.hu (amavisd-new); dkim=pass (2048-bit key) header.d=ttk.bme.hu
Authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=ttk.bme.hu;

Meghívó

BME Elméleti Fizika Szeminárium,

márc. 1. péntek 10h15,

1111 Budapest, Budafoki út 8., BME F III. magasföldszint 01.,
Elméleti Fizika Tanszék szemináriumi szoba

Krasznai Anna (BME TTK Elm. Fiz. tanszék):
Schrödinger cats escape confinement

In this talk, I discuss local quenches from initial states generated by a
single spin-flip in either the true or the false vacuum state of the
confining quantum Ising spin chain in the ferromagnetic regime[1]. Contrary
to global quenches, where the light-cone behaviour is strongly suppressed,
after local quenches a significant light-cone signal propagating with a
nonzero velocity emerges besides the expected localised oscillating
component. Combining an analytic representation of the initial state with a
numerical description of the relevant excitations using the two-fermion
approximation, we can construct the spectrum of post-quench excitations and
their overlaps with the initial state, identifying the underlying
mechanism. For confining quenches built upon the true vacuum, the
propagating signal consists of Schrödinger cats of left and right-moving
mesons escaping confinement. In contrast, for anti-confining quenches built
upon the false vacuum, it is composed of Schrödinger cats of left and
right-moving bubbles which escape Wannier-Stark localisation.

[1] A. Krasznai, G. Takács, arXiv:2401.04193

Minden érdeklődőt szeretettel várunk.
Asbóth János,
szemináriumi koordinátor

[Fizinfo] BME Elm. Fiz. Szeminárium, márc. 1., Krasznai Anna, Janos Asboth, 02/28/2024