On physic properties of mass under very low temperatures [II.]

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Accurate masses of very low mass stars : II The very low mass triple system Gl 866 ⋆

ASTRONOMY AND ASTROPHYSICS Accurate masses of very low mass stars: II The very low mass triple system Gl 866 Abstract. We present very accurate orbital parameters and mass measurements (2.4% accuracy) for the well known very low mass triple system Gl 866. We obtain first orbital elements for the short-period orbit and greatly improve the long period orbit. All three stars have masses close to 0...

متن کامل

Physical Limits on the Notion of Very Low Temperatures

Standard statistical thermodynamic views of temperature fluctuations predict a magnitude ( √ < (∆T )2 >/T ) ≈ √ (kB/C) for a system with heat capacity C. The extent to which low temperatures can be well defined is discussed for those systems which obey the thermodynamic third law in the form lim(T→0) C = 0. Physical limits on the notion of very low temperatures are exhibited for simple systems....

متن کامل

Cooling Many Particles to Very Low Temperatures

In a recent paper [Beige, Knight, and Vitiello, quant-ph/0404160], we showed that a large number N of particles can be cooled very efficiently. The particles should be excited by red-detuned laser fields while coupling to the quantized field mode inside a resonant and leaky optical cavity. When the coupling constants are for all particles the same, a collective behavior can be generated and the...

متن کامل

Acoustic Properties of Amorphous Solids at Very Low Temperatures: The Quest for Interacting Tunneling States

We discuss the strain dependence of the acoustic properties of amorphous metals in both normal and superconducting states, in the temperature range 0.1 mK ≤ T ≤ 1 K. A crossover is found when the strain energy is of the order of the effective interaction energy between tunneling systems at the corresponding temperature. Our results provide clear evidence for the interaction between tunneling sy...

متن کامل

Constraining the properties of spots on Pleiades very low mass stars

We present results of a multi-filter monitoring campaign for very low mass (VLM) stars in the Pleiades. Simultaneous to our I-band time series (Scholz & Eislöffel 2004b), which delivered photometric periods for nine VLM stars, we obtained light curves in the Jand H-band. One VLM star with M ≈ 0.15M⊙ (BPL129) shows a period in all three wavelength bands. The amplitudes in I, J, and H are 0.035, ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Časopis pro pěstování matematiky a fysiky

سال: 1901

ISSN: 1802-114X

DOI: 10.21136/cpmf.1901.121019