Quantum Physics Corner@quant_phys
A focusing wave packet in a #quantum billiard bounded by the Lamé curve |x|^n + |y|^n = 1 with n = 3/2. https://pic.twitter.com/CqIN8GyK4m
Retweeted by Masahiro Hotta
retweeted at 17:52:52
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Quantum Physics Corner@quant_phys
A focusing wave packet in a #quantum billiard bounded by the Lamé curve |x|^n + |y|^n = 1 with n = 3/2. https://pic.twitter.com/CqIN8GyK4m
Retweeted by Masahiro Hotta
retweeted at 17:52:52
Neutrons, like many wild species, crave freedom and die young when kept in captivity https://www.nature.com/articles/d41586-021-02812-z?fbclid=IwAR1Opf8I6BqbSNa_8XTKa2_rJ8uaPLUZr-Zu-ogoy39nibZU92qQCy-zdOI…
Retweeted by Masahiro Hotta
retweeted at 09:56:36
空をご覧ください。
中秋の名月に次いで美しいといわれる名月「後の月(のちのつき)」(旧暦九月十三夜)が南東の空に輝いています。(さきほど撮影)
今日もお疲れさまでした。
明日もおだやかな一日になりますように。 https://pic.twitter.com/JPE9sDkXcd
Retweeted by Masahiro Hotta
retweeted at 09:35:26
間接測定では量子ゼノン効果が起きないことの証明は、「量子情報と時空の物理【第2版】」(サイエンス社)の第5章に書きましたので、ご参考になさって下さい。「量子力学では、見ただけで相手に影響がある」というのは、全くの誤解に過ぎません。
posted at 09:34:19
よくある誤解ですが、外部観測者の間接的観測は、対象となる量子系に物理的な影響を与えません。例えその対象系からの信号を連続的に観測し続けても、その対象系には量子ゼノン効果を含めたあらゆる影響が出ません。量子ゼノン効果を起こしたければ、対象と直接相互作用して測定をする必要があります。
posted at 09:31:44
Astronauts capture stunning aurora from International Space Station https://trib.al/xNPWllP https://pic.twitter.com/gLZvWE2MPE
Retweeted by Masahiro Hotta
retweeted at 09:28:11
須浦 琢登|Takuto Suura@katayaki_photo
雲海の季節がやってきましたね!
自分は少し薄めの雲海が好物です!!
#千葉 #雲海 #鹿野山 #チーム房総 https://pic.twitter.com/eHsqEDN1df
Retweeted by Masahiro Hotta
retweeted at 09:00:01
今朝は秋と冬の境目が撮れました https://pic.twitter.com/08fwPQcj3w
Retweeted by Masahiro Hotta
retweeted at 07:46:20
Wonder of Science@wonderofscience
Sunrise over Earth seen from space.
Credit: ESA/NASA https://pic.twitter.com/aOnGSDQlTE
Retweeted by Masahiro Hotta
retweeted at 07:25:26
提唱されて60年,半世紀強を経た現在でも,南部博士の理論は,素粒子論さらには宇宙論において最先端の研究の源泉となっている。
日経サイエンス2021年11月号【創刊50周年企画】
「南部陽一郎の 『対称性の自発的破れ』から半世紀 宇宙の暗黒に迫る」 https://www.nikkei-science.com/202111_048.html #物理 #宇宙 https://pic.twitter.com/2EZsWmlrNJ
Retweeted by Masahiro Hotta
retweeted at 07:24:16
The orbital dance continues, bringing an end to solar conjunction. As Mars and Earth continue in their paths, the sun’s out of the way again. I’m back in touch with my team, safe and well, and continuing to listen to the heartbeat of Mars. http://mars.nasa.gov/insight https://pic.twitter.com/iI6mhrsmSa
Retweeted by Masahiro Hotta
retweeted at 07:21:42
1ヵ月後の11月19日(金)の日没後、日本全国で部分月食が見られます。
今回は1枚目の写真のようにほぼ皆既月食と言っていいほど深く欠ける月食です。
東の低い位置に見えます。今の内から東の空が開けている場所をチェックしましょう。
(1枚目の写真は2018年1月31日の皆既月食時に撮影したものです) https://pic.twitter.com/lLGnqcHMwS
Retweeted by Masahiro Hotta
retweeted at 07:21:34
Nao(@nao_k__) 大分の週末フォトグラファー@nao_k__
今日もファイティン👊
#あたりまえの毎日は奇跡なんだ
#夜明け
#大分
#奈多海岸
#ファインダー越しの私の世界
#キリトリセカイ
#写真好きな人と繋がりたい
#写真を撮るのが好きな人と繋がりたい
#東京カメラ部 https://pic.twitter.com/tfXqtCUgKY
Retweeted by Masahiro Hotta
retweeted at 07:21:30
Hubble Space Telescope@HubbleTelescope
Working from home hasn’t been kind to our virtual desktops. Let’s take part in #CleanYourVirtualDesktopDay, by throwing away that old Word document you don’t need and changing your background to one of these great Hubble images: https://fal.cn/3j6mG https://pic.twitter.com/DA5xr6rvDg
Retweeted by Masahiro Hotta
retweeted at 06:45:18
Gary Mark⚡️Blue Sky Kites 𝕏 🈴@blueskykites
True. @SpaceX @elonmusk @WholeMarsBlog https://pic.twitter.com/jwxHXrZmlZ
Retweeted by Masahiro Hotta
retweeted at 06:45:02
https://twitter.com/hottaqu/status/1357820735700357120?s=20…
posted at 06:43:12
「物質は実在しない」は本当か?とか、まだ言っているやつがいるって?
#量子力学は情報理論 https://twitter.com/AmymAisme/status/1448716718482804736…
posted at 06:42:23
非公開
retweeted at xx:xx:xx
National Air and Space Museum@airandspace
#OTD in 1989, Space Shuttle Atlantis launched on the STS-34 mission carrying Galileo into orbit for its interplanetary mission on Jupiter. It was deployed 6.5 hours into the spaceflight. More on Galileo: https://s.si.edu/2CpYnmE https://pic.twitter.com/M0iXcW4IZG
Retweeted by Masahiro Hotta
retweeted at 06:33:47
一度は聞いてみたい音響彫刻の一つ「クリスタル・バシェ」。濡れたガラスの棒を擦る振動が金属板を通り、グラスファイバーと金属製のコーンがそれを増幅し、天国のラッパみたいな音を発します。
https://pic.twitter.com/KJLedFuOZK
Retweeted by Masahiro Hotta
retweeted at 05:24:31
Google DeepMind@GoogleDeepMind
We’ve acquired the MuJoCo physics simulator (http://mujoco.org) and are making it free for all, to support research everywhere. MuJoCo is a fast, powerful, easy-to-use, and soon to be open-source simulation tool, designed for robotics research: http://dpmd.ai/mujoco-blog https://pic.twitter.com/M9mTaKDqtn
Retweeted by Masahiro Hotta
retweeted at 05:24:11
NASA eyes solar array glitch on new Lucy asteroid spacecraft https://trib.al/r6Ly3EZ https://pic.twitter.com/iDVVSWpvxe
Retweeted by Masahiro Hotta
retweeted at 05:22:36
The NASA Crew Earth Observations experiment is a payload on the International Space Station, and is the "gateway" to astronaut photography. This video was taken by the crew of Expedition 42 on August 12, 2015 during a pass over New Zealand [video: https://buff.ly/2Z2Ctqx] https://pic.twitter.com/7RmVdSMtbX
Retweeted by Masahiro Hotta
retweeted at 05:12:53
The goal of this project is to understand three fundamental problems of Extreme Universe, namely, (i) Quantum aspects of black holes, (ii) Quantum cosmology, and (iii) Quantum Many-body dynamics, in the light of quantum information theory.
Retweeted by Masahiro Hotta
retweeted at 03:21:19
The purpose of this collaboration project “Extreme Universe” is to develop interdisciplinary researches which bridge between quantum information theory and various topics of physics, such as quantum gravity, cosmology and condensed matter physics.
Retweeted by Masahiro Hotta
retweeted at 03:21:17
Extreme Universe Collaboration(Head investigator, Tadashi Takayanagi) based on MEXT Grant-in-Aid for Transformative Research Areas A anticipates appointing more than ten post-doctoral fellows across the following research groups. (Deadline Nov.30, 2021)
https://academicjobsonline.org/ajo/jobs/19880
Retweeted by Masahiro Hotta
retweeted at 03:21:15
学術変革Aで採択されました「極限宇宙」(代表:高柳匡(京大))における研究員公募が開始をしました。素粒子、宇宙、物性の各グループでの公募があります。興味のある方は是非応募してください。
https://academicjobsonline.org/ajo/jobs/19880
Retweeted by Masahiro Hotta
retweeted at 03:21:11
高知で見つけた自然。
HafH×TABIPPO
#つながる余白をつくる旅 https://pic.twitter.com/qzGVE0jwjV
Retweeted by Masahiro Hotta
retweeted at 03:17:21
Chandra Observatory@chandraxray
⚫Today Chandra is looking in on the central, supermassive #BlackHole (SMBH) in the Andromeda Galaxy. Our Milky Way's SMBH, Sagittarius A* (pronounced "Sagittarius Ā-Star"), is about 4 million times the mass of our Sun. Andromeda's SMBH contains more than 20 times that much mass! https://pic.twitter.com/iR2KjvSHNZ
Retweeted by Masahiro Hotta
retweeted at 03:17:08